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EK-SW500-IG-D01

June 1994

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Document:	StorageWorks Solutions SW500-Series Cabinet Inst and User's Gde
Order Number:	EK-SW500-IG
Revision:	D01
Pages:	108
Original Filename:

OCR Text

StorageWorks™ Solutions
SW500-Series Cabinet
Installation and User’s Guide
Order Number: EK–SW500–IG. D01
This manual describes the concepts and procedures necessary to
install, configure, and use StorageWorks SW500-series cabinets. Both
mechanical cabinet configuration and power configuration are covered in
this manual. The configuration and connection of SCSI–2 signal buses is
covered in referenced StorageWorks documentation.

Digital Equipment Corporation
Maynard, Massachusetts

June 1994
While Digital believes the information included in this publication is correct as of the date of
publication, it is subject to change without notice.
Digital Equipment Corporation makes no representations that the interconnection of its products
in the manner described in this document will not infringe existing or future patent rights, nor
do the descriptions contained in this document imply the granting of licenses to make, use, or sell
equipment or software in accordance with the description.
NOTE: This equipment generates, uses, and may emit radio frequency energy. The equipment has
been type tested and found to comply with the limits for a Class A digital device persuant to Part
15 of the FCC rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation.
Any changes or modifications made to this equipment may void the user’s authority to operate the
equipment.
Operation of this equipment in a residential area may cause interference in which case the user
at his own expense will be required to take whatever measures may be required to correct the
interference.
© Digital Equipment Corporation 1993, 1994.
Printed in the United States of America.
All rights reserved.
CI, Digital, HSJ, HSZ, StorageWorks, and the DIGITAL logo are trademarks of Digital Equipment
Corporation.

This document was prepared using VAX DOCUMENT Version 2.1.

Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vii

Manufacturer’s Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 How to Use This Manual
1.1
1.2

Cabinet Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locating the Information You Need . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–1
1–1

2 Introduction
2.1
2.2
2.3
2.3.1
2.3.2
2.3.3
2.4

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Major Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Single-Cabinet Power Configuration . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual Shelf Power Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual-Cabinet Power Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinet Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–1
2–4
2–7
2–7
2–8
2–9
2–9

3 Site Preparation
3.1
3.2

General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1
3–2

4 Unpacking and Installation
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8

Unpacking the Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Cabinet from the Pallet . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring the Cabinet Rack Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Placing the Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leveling the Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Skirt Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspecting the Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Powering the Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–1
4–4
4–7
4–7
4–8
4–8
4–9
4–10

5 Configuring SW500 Storage-Only Cabinets
5.1
5.1.1
5.1.2
5.2
5.3
5.4
5.4.1

Cabinet Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shelf Locations Without Tape Drives . . . . . . . . . . . . . . . . . . . . . . . . . .
TZ8x7-Series Tape Drive/Shelf Locations . . . . . . . . . . . . . . . . . . . . . . .
Filler and Air Separation Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Signal Cabling and Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shelf SCSI–2 Cable Selection and Connection . . . . . . . . . . . . . . . . . . .

5–1
5–2
5–2
5–3
5–4
5–4
5–4

iii

5.4.2
5.4.3

SCSI–2 Cable Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Cable Routing Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–4
5–4

6 Configuring SW500 Controller/Storage Cabinets
6.1
6.2
6.2.1
6.2.2
6.3
6.4
6.5
6.5.1
6.5.2
6.5.3
6.6
6.7
6.7.1
6.7.2
6.8

HS-Family Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinet Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shelf Locations Without Tape Drives . . . . . . . . . . . . . . . . . . . . . . . . . .
TZ8x7-Series Tape Drive/Shelf Locations . . . . . . . . . . . . . . . . . . . . . . .
Filler and Air Separation Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Host CI Signal Cabling and Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CI Bulkhead Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal CI Cable Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Host-to-CI Bulkhead Cable Routing . . . . . . . . . . . . . . . . . . . . . . . . . . .
Host SCSI–2 Signal Cabling and Routing . . . . . . . . . . . . . . . . . . . . . . . . .
Shelf SCSI–2 Signal Cabling and Routing . . . . . . . . . . . . . . . . . . . . . . . . .
Shelf SCSI–2 Cable Selection and Connection . . . . . . . . . . . . . . . . . . .
SCSI–2 Cable Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Signal Cable Routing Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6–1
6–2
6–2
6–3
6–4
6–5
6–5
6–5
6–5
6–7
6–7
6–8
6–9
6–9
6–9

7 Installing StorageWorks Shelves
7.1
General Shelf Mounting Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2
Shelf Bracket Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.1
Screw-Mounted Shelf Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.2
Tab-Mounted Shelf Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3
Shelf Bracket Kit Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4
Cabinet Preparation and Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.5
Accessing the Cabinet Rack Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.5.1
Removing the Exterior Cabinet Panels . . . . . . . . . . . . . . . . . . . . . . . .
7.6
Installing the Shelves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.6.1
Installing Shelves With Screw Mounts . . . . . . . . . . . . . . . . . . . . . . . . .
7.6.2
Installing Shelves with Tab Mounts . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.7
Air Separation Panel Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.7.1
Installing the Front Air Separation Panel . . . . . . . . . . . . . . . . . . . . . .
7.7.2
Installing the Rear Air Separation Panel . . . . . . . . . . . . . . . . . . . . . . .
7.7.2.1
Rear Air Separation Panel Installation—Opening Above the
Upper-Most Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.7.2.2
Rear Air Separation Panel Installation—CDU A Above the
Upper-Most Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.8
Installing Exterior Cabinet Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7–1
7–2
7–2
7–2
7–2
7–3
7–3
7–3
7–5
7–5
7–9
7–13
7–13
7–14
7–14
7–14
7–15

8 Installing TZ8x7-Series Tape Drives
8.1
8.2
8.3
8.3.1
8.3.2
8.3.3
8.4
8.5
8.6

General Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessing the Cabinet Rack Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chassis Rail Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chassis Rail Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Right Position Chassis Rail Assembly Installation . . . . . . . . . . . . . . . .
Left Position Chassis Rail Assembly Installation . . . . . . . . . . . . . . . . .
Mounting the TZ8x7-Series Tape Drive Enclosure . . . . . . . . . . . . . . . . . . .
Supplying AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCSI–2 Signal Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8–1
8–2
8–4
8–4
8–5
8–7
8–10
8–13
8–13

8.7
8.8

Installing the Cabinet Door Tape Bezel Kit . . . . . . . . . . . . . . . . . . . . . . . .
Reinstalling Exterior Cabinet Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8–13
8–13

9 Power Configuration
9.1
9.2
9.3
9.4
9.4.1
9.4.2
9.5

General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable Distribution Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Utility Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Single CDU Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Single Cabinet Power Configuration . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual-Shelf Power Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual-Cabinet Power Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9–1
9–1
9–2
9–2
9–2
9–2
9–3

StorageWorks Glossary
Index
Figures
2–1
2–2
2–3
2–4
2–5
2–6
3–1
4–1
4–2
4–3
4–4
4–5
4–6
5–1
5–2
6–1
6–2
6–3
7–1
7–2
7–3
7–4
7–5
7–6
7–7
7–8
8–1

SW500-Series Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinet Major Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TZ8x7-Series Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Single-Cabinet Power Configuration . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual-Shelf Power Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual-Cabinet Power Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum Installation Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping Container Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping Pallet Ramp Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping Bolts and Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Cabinet from the Pallet . . . . . . . . . . . . . . . . . . . . . . . . .
Leveler Foot Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinet Skirt Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SW500 Storage-only Cabinet Shelf Locations Without Tape Drives . . .
SW500 Storage-only Cabinet Shelf and Tape Drive Locations . . . . . .
SW500 Controller/Storage Cabinet Shelf Locations Without Tape
Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SW500 Controller/Storage Cabinet Shelf and Tape Drive Locations . .
CI Bulkhead and Internal CI Cable Installation . . . . . . . . . . . . . . . . .
Exterior Cabinet Panel Removal and Installation . . . . . . . . . . . . . . . .
Horizontal Shelf Bracket Installation . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Shelf Bracket Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Shelf Bracket Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Shelf Bracket Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Air Separation Panel Installation . . . . . . . . . . . . . . . . . . . . . . . .
Rear Air Separation Panel Installation—Empty Shelf Position Above
Upper-Most Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Air Separation Panel Installation—CDU A Installed Above
Upper-Most Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TZ8x7-Series Tape Drive Installation . . . . . . . . . . . . . . . . . . . . . . . . . .

2–2
2–5
2–6
2–7
2–8
2–9
3–2
4–3
4–5
4–6
4–7
4–8
4–9
5–2
5–3
6–3
6–4
6–6
7–4
7–7
7–8
7–11
7–12
7–13
7–14
7–15
8–2
v

8–2
8–3
8–4
8–5
8–6
8–7
8–8
9–1

Cabinet Side Panel Removal and Installation . . . . . . . . . . . . . . . . . . .
Chassis Rail Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Right Position Chassis Rail Assembly Installation . . . . . . . . . . . . . . . .
Left Position Chassis Rail Assembly Installation . . . . . . . . . . . . . . . . .
Right Position Tape Drive Mounting . . . . . . . . . . . . . . . . . . . . . . . . . .
Left Position Tape Drive Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . .
TZ8x7-Series Tape Drive Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . .
CDU Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8–3
8–5
8–6
8–8
8–11
8–12
8–14
9–4

StorageWorks Related Documentation . . . . . . . . . . . . . . . . . . . . . . . .
Acoustics—Preliminary Declared Values per ISO 9296 and ISO
7779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Schallemissionswerte—Vorläufige Werteangaben nach ISO 9296 und
ISO 7779/DIN EN27779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Information and Procedure Locations . . . . . . . . . . . . . . . . . . . . . . . . .
SW500-Series Cabinet Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Stabilization Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .
SW500 Controller/Storage Cabinet SCSI–2 Cable Lengths . . . . . . . . .
SW500 Metric Shelf Screw-Mounted Bracket Kit Parts List . . . . . . . .
SW500 Metric Shelf Tab-Mounted Bracket Kit Parts List . . . . . . . . . .
Shelf Stop Bracket Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shelf Locking Bracket Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . .
Horizontal Shelf Stop Bracket Positions . . . . . . . . . . . . . . . . . . . . . . .
Horizontal Shelf Locking Bracket Part Numbers . . . . . . . . . . . . . . . . .
CDU Power Cable Variations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SW500 Cabinet Dual Power Option Kit Parts List . . . . . . . . . . . . . . .

viii

Tables
1
2
3
1–1
2–1
4–1
6–1
7–1
7–2
7–3
7–4
7–5
7–6
9–1
9–2

xii
xiii
1–2
2–3
4–2
6–9
7–2
7–3
7–6
7–6
7–9
7–10
9–2
9–3

Preface
This document presents the concepts and procedures necessary to install,
configure, and use StorageWorks™ SW500-series cabinets. Both mechanical
cabinet configuration and power configuration are covered in this manual.
Configuring and connecting SCSI–2 signal buses is covered in referenced
StorageWorks documentation.

Intended Audience
This manual is intended for use by customers and Digital Multivendor Customer
Services engineers responsible for installing, configuring, and using StorageWorks
SW500-series cabinets.
Note
The procedures described in this guide are to be performed only by
qualified service personnel.

Structure
This manual is organized as follows:
Chapter 1

Discusses how to use this manual to configure an SW500-series cabinet
storage subsystem.

Chapter 2

Provides an overview of the SW500-series cabinet, a description of its
major components, and a discussion of the power options available for
it.

Chapter 3

Contains site preparation information.

Chapter 4

Describes the unpacking and installation of SW500-series cabinets.

Chapter 5

Describes the configuration of SW500-series storage-only cabinets.

Chapter 6

Describes the configuration of SW500 controller/storage cabinets.

Chapter 7

Describes the mounting of StorageWorks shelves within SW500-series
cabinets.

Chapter 8

Describes the mounting of TZ8x7-series tape drives within SW500series cabinets.

Chapter 9

Describes the configuration of power within SW500-series cabinets.

Glossary

The Glossary defines the acronyms and specialized terms used in the
StorageWorks environment.

vii

Related Documents
Table 1 lists the StorageWorks-related user documents organized by use, system,
or product.
Table 1 StorageWorks Related Documentation
Document Title

Order Number
StorageWorks Primary Publications

StorageWorks Solutions Configuration Guide

EK–BA350–CG

StorageWorks Solutions Shelf and SBB User’s Guide

EK–BA350–UG

StorageWorks RAID Array 110 Subsystem
DEC RAID Utilities User’s Guide

EK–DECRA–UG

HSZ10–AA Controller Site Preparation Guide

EK–HSZ10–IN

StorageWorks Expansion Storage Pedestal User’s Guide

EK–SMCPA–UG

StorageWorks RAID Array 110 Subsystem User’s Guide

EK–SM2CA–UG

StorageWorks RAID Array 110 Utility for MS–DOS User’s Guide

AA–Q0N5A–TE

StorageWorks RAID Array 110 Utility for Novell NetWare User’s Guide

AA–Q0N4A–TE

StorageWorks RAID Array 110 Utility for SCO UNIX User’s Guide

AA–Q0N6A–TE

StorageWorks Array Controller 140-Series
StorageWorks Array Controller HS Family of Array Controllers User’s Guide

EK–HSFAM–UG

StorageWorks BA350–MA Controller Shelf User’s Guide

EK–350MA–UG

DECraid+ Rackmount Storage Subsystem and HSC Intelligent I/O Servers
HSC Controller User’s Guide
HSC Controller Installation Manual

AA–PFSQA–TK
EK–HSCMN–IN
(continued on next page)

viii

Table 1 (Cont.) StorageWorks Related Documentation
Document Title

Order Number
StorageWorks Enclosures

BA35X–VA Vertical Mounting Kit User’s Guide

EK–350SV–UG

InfoServer 1000 Installation and Owner’s Guide

EK–INFLC–OM

StorageWorks Solutions Desktop Expansion Unit User’s Guide

EK–BA353–UG

StorageWorks Solutions SW500 and SW800 Cabinet Metric Shelf Bracket Kit
Installation Guide

EK–35XRD–IG

StorageWorks Solutions HSR95-Series Cabinet Metric Shelf Bracket Kit Installation
Guide

EK–35XRD–IG

StorageWorks RETMA Shelf Rail Kit Installation Guide

EK–35XRB–IG

StorageWorks Solutions SW500-Series Cabinet Installation and User’s Guide

EK–SW500–IG

StorageWorks Solutions SW500-Series Cabinet Cable Distribution Unit Installation
Guide

EK–SW5CU–IG

StorageWorks Solutions SW800-Series Data Center Cabinet Cable Distribution Unit
Installation Guide

EK–SWCDU–IS

StorageWorks Solutions SW800-Series Data Center Cabinet Installation and User’s
Guide

EK–SW800–IG

Instructions for Installation of the Tape Bezel Kit on SF400 Series Cabinets‡

EK–SFTBK–IS

Storage Devices
EK–DWZZA–SV

SCSI Signal Converter DWZZA–AA
SCSI Signal Converter DWZZA–MA

EK–DWZZM–SV

SCSI Signal Converter DWZZA–VA

EK–DWZAA–SV

StorageWorks Building Blocks User’s Guide

EK–SBB35–UG

StorageWorks Solutions 3½-Inch Storage Device Installation Guide

EK–MC350–IG

StorageWorks Solutions 5¼-Inch Storage Device Installation Guide

EK–MC525–IG

TZ86–VA Cartridge Tape Drive Device Addresses

EK–TZ86A–UG

TZ87–VA Cartridge Tape Drive Device Addresses

EK–TZ87A–DA

Storageworks Solutions TZ8x7-Series Tape Drive SCSI Bus Configuration and
Installation Guide

EK–TZ8X7–IG

General Reference Publications
Digital Systems and Options Catalog

†

Small Computer System Interface, An Overview

EK–SCSIS–OV

Small Computer System Interface, A Developer’s Guide

EK–SCSIS–DK

† Available from your Digital account representative.
‡ Also applies to StorageWorks cabinets.

Documentation Conventions
The following conventions are used in this manual:

boldface type

Boldface type indicates the first instance of terms being defined in text,
in the glossary, or both.

italic type

Italic type indicates emphasis and complete manual titles. In the
glossary, italic type also is used to indicate cross-references.

Manufacturer’s Declarations
Following are manufacturer’s declarations applicable to StorageWorks
SW500-series cabinets:
CAUTION
This is a class A product. In a domestic environment, this product may
cause radio interference, in which case the user may be required to take
adequate measures.

ACHTUNG !
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen
können bei Betrieb dieses Gerätes Rundfunkstörungen auftreten, in
welchen Fällen die Benutzer für entsprechende Gegenmaßnahmen
verantwortlich sind.

ATTENTION !
Ceci est un produit de Classe A. Dans un environment domestique, ce
produit risque de créer des interférences radiélectriques, il appartiendra
alors à l´utilisateur de prendre les mesures spécifiques appropriées.

Note
The equipment described in this manual is listed by the Underwriters
Laboratories Incorporated and bears the UL Listing mark. SW500-series
cabinets are also certified by the Canadian Standards Association and
TÜV Product Service GmbH and bear both the CSA certification and
TÜV GS marks. The equipment also complies with the requirements for
CE-mark Class A.

Note
Das in diesem Manual beschriebene Gerät wurde von TÜV Produkt
Service GmbH auf Sicherheit geprüft and trägt das GS Zeichen. Bitte
beachten Sie, daß Eingriffe in das Gerät, Reparaturen oder der Einbau
von Erweiterungen nur von Digital Personal erfolgen darf, da sonst die
GS Zulassung ungültig wird. Die Zulassung wird auch ungültig, wenn
nicht von Digital qualifizierte Speichererweiterungen eingebaut werden.
Das Gerät muß so aufgestellt werden, daß die Steckdose frei zugänglich
ist.

Table 2 Acoustics—Preliminary Declared Values per ISO 9296 and ISO 7779
SoundPower
Level
 , B‡

SoundPressure
 , dBALevel
(Bystander Positions)

Product†

Idle

Operate

Idle

Operate

SW500 cabinet only

0.0

SW500 with 2 BA350–MA shelves,
each containing 2 HSJ40™ controllers
and 8 BA350–SA shelves, each
containing 6 RZ26–VA disk drives

7.0

50.0

51.0

BA350–SA shelf containing
6 RZ26–VA disk drives

5.7

BA350–MA shelf with 2 HSJ40 controllers

5.6

Per device when installed in SW500

SoundPower
Level
 , B‡

SoundPressure
 , dBALevel
(Operator Positions)

Product†

Idle

Operate

Idle

Operate

SW500 cabinet only

0.0

SW500 with 2 BA350–MA shelves,
each containing 2 HSJ40 controllers
and 8 BA350–SA shelves, each
containing 6 RZ26–VA disk drives

7.0

50.0

51.0

BA350–SA shelf containing
6 RZ26–VA disk drives

5.8

BA350–MA shelf with 2 HSJ40 controllers

5.7

Per device when installed in SW500

† Current values for specific configurations are available from Digital representatives.
‡ 1 B = 10 dBA.

Note
Table 3 is a translation of the English language specifications in Table 2
into the German language.

xii

Table 3 Schallemissionswerte—Vorläufige Werteangaben nach ISO 9296 und
ISO 7779/DIN EN27779
Schalleistungspegel
 , B‡

Schalldruckpegel
 , dBA
(Beistehende Position)

Gerät†

Leerlauf

Betrieb

Leerlauf

Betrieb

nur SW500 Kabinett

0,0

SW500 mit 2 BA350–MA shelves,
jedes bestückt mit 2 HSJ40 controllers
und 8 BA350–SA shelves, jedes
bestückt mit 6 RZ26–VA disk drives

7,0

50,0

51,0

BA350–SA shelf mit
6 RZ26–VA disk drives

5,7

BA350–MA shelf mit 2 HSJ40 controllers

5,6

Pro Gerät installiert im SW500

Schalleistungspegel
 , B‡

Schalldruckpegel
 , dBA
(Bediener Position)

Gerät†

Leerlauf

Betrieb

Leerlauf

Betrieb

nur SW500 Kabinett

0,0

SW500 mit 2 BA350–MA shelves,
jedes bestükt mit 2 HSJ40 controllers
und 8 BA350–SA shelves, jedes
bestükt mit 6 RZ26–VA disk drives

7,0

50,0

51,0

BA350–SA shelf mit
6 RZ26–VA disk drives

5,8

BA350–MA shelf mit 2 HSJ40 controllers

5,7

Pro Gerät installiert im SW500

† Aktuelle Werte für spezielle Ausrüstungsstufen sind über die Digital Equipment Vertretungen
erhältlich.
‡ 1 B = 10 dBA.

xiii

1
How to Use This Manual
This chapter shows you how to use the information in this manual to configure
an SW500-series cabinet storage subsystem.

1.1 Cabinet Configuration
Following is the sequence of steps that you must follow to set up a storage
subsystem in an SW500-series cabinet:
1. Understanding cabinet concepts—To follow the procedures in this manual,
you should be familiar with the components and nomenclature used with the
SW500-series cabinet family.
2. Site preparation—You must ready the site for the installation of the cabinet.
3. Unpacking—You must unpack the cabinet and set it in place at the site.
4. Cabinet layout—You must determine the layout of the cabinet’s shelves, tape
units, and power cabling.
5. Component installation—You must install the cabinet’s shelves and tape units
in accordance with the layout.
6. Power cabling routing and installation—You must install and route the
cabinet’s power cabling in accordance with the layout.
7. SCSI bus design and connection—You must design and connect the cabinet’s
SCSI bus signal cabling.
8. SCSI bus cable routing—You must properly route the cabinet’s SCSI bus
signal cabling, as it is installed.

1.2 Locating the Information You Need
This manual contains the information and procedures to support the cabinet
configuration process. The design and connection of SCSI signal buses, however,
is covered in referenced documentation. Table 1–1 shows each configuration step,
where you can find the information, and procedures you need to complete the
step.

How to Use This Manual 1–1

Table 1–1 Information and Procedure Locations
Configuration Step

Location of Supporting Information

Comments

Understanding
cabinet concepts

Chapter 2, Introduction

Site preparation

Chapter 3, Site Preparation

Unpacking

Chapter 4, Unpacking and Installation

Cabinet layout

Chapter 5, Configuring SW500 StorageOnly Cabinets

To lay out storage-only cabinets

Chapter 6, Configuring SW500
Controller/Storage Cabinets

To lay out cabinets containing both
controllers and storage

Component
installation
StorageWorks
shelves

Chapter 7, Installing StorageWorks
Shelves

TZ8x7 tape
drives

Chapter 8, Installing TZ8x7-Series
Tape Drives

Power cabling
routing and
installation

Chapter 5, Configuring SW500 StorageOnly Cabinets

For storage-only cabinets

Chapter 6, Configuring SW500
Controller/Storage Cabinets

For cabinets containing both controllers
and storage

SCSI bus design
and connection†

StorageWorks Solutions Family
Configuration Guide
StorageWorks Solutions SBB and Shelf
User’s Guide

For BA350–Sx storage shelves

StorageWorks Array Controller HS
Family of Array Controllers User’s
Guide
StorageWorks BA350–MA Controller
Shelf User’s Guide

For BA350–Mx controller/storage shelves

StorageWorks RAID Array 110
Subsystems User’s Guide

For BA350–Ex controller/storage shelves
(major component of the RAID Array 110
subsystem)

Storage Solutions TZ8x7-Series Tape
Drive SCSI Bus Configuration and
Installation Guide

For TZ8x7-series tape drives

Chapter 5, Configuring SW500 StorageOnly Cabinets

Routing for storage-only cabinets

Chapter 6, Configuring SW500
Controller/Storage Cabinets

For cabinets containing both controllers
and storage

SCSI bus cable
routing

†The procedures involved in SCSI bus design and connection are specific to the components being bused together. See the
referenced documentation for detailed information on SCSI bus design and connection.

1–2 How to Use This Manual

2
Introduction
This chapter presents an overview, a description of major components, and a
discussion of power options for StorageWorks SW500-series cabinets.

2.1 Overview
The SW500-series cabinet, shown in Figure 2–1, is a member of Digital’s
StorageWorks family of modular enclosures. The 600 mm-wide cabinet provides
an attractive enclosure with rackmount space and primary power for up to 10
StorageWorks shelves of different types. Up to six StorageWorks shelves can
be used in conjunction with two TZ8x7-series tape drives. The cabinet can
accommodate both data storage and controller/data storage combinations. The
cabinet and its StorageWorks shelves can be configured with dual ac power
capability to provide redundant power supplies.
SW500-series cabinets offer a versatile, modular solution to array storage
problems. You may use them in both open-office and data center applications.
You may order the cabinet in a variety of preconfigured subsystem versions with
such options as mixed storage device types and storage, controller, or power
redundancy. You also can order custom configurations to meet your specific
needs. The modularity of the cabinet and its components offers efficient and
cost-effective upgrade paths.
Specifications for SW500-series cabinets are shown in Table 2–1.

Introduction 2–1

Figure 2–1 SW500-Series Cabinet

CXO-3897A-MC

2–2 Introduction

Table 2–1 SW500-Series Cabinet Specifications
Characteristic

Specification

Dimensions (nominal)

110.00 cm (43.31 in) height, 60.00 cm (23.62
in) width, 87.25 cm (34.35 in) depth

Weight
Empty cabinet (only 1 CDU installed)
Empty cabinet with shipping
packaging
Maximum configuration (2 BA350–
MA shelves, 8 BA350–SA shelves
with 6 RZ26 disk drives in each,
2 CDUs)
Agency compliance

140 kg (309 lb)
160 kg (353 lb)

290 kg (639 lb)
FCC, UL, CSA, TÜV, and CE-mark

Electrical rating
SW5xx–AC

100–120 volts, 60 Hz, single phase, 20
amperes

SW5xx–AD

100–120/200–240 volts, 50/60 Hz, single
phase, 20/16 amperes

Temperature

+10°C to +40°C (+50°F to +95°F)
Reduce rating by 1.8°C for each 1000 m
altitude (1.0°F for each 1000 ft altitude)

Humidity

10 to 85% at maximum wet bulb temperature
of +32°C (+90°F) and minimum dew point of
+2°C (+36°F)
Recommended Environmental Limits†

Operating environment
Temperature

18°C to 24°C (64.4°F to 75.2°F) with an
average rate of change of 3°C/hour maximum
and a step change of 3°C or less

Relative humidity

40 to 60% (noncondensing) with a step change
of 10% or less (noncondensing)

Altitude

Up to 2400 m (8000 ft)

Air quality
(maximum particle count)

Not to exceed 500,000 particles per cubic foot
of air at a size of 0.5 micron or larger

Nonoperating environment
Temperature

–40°C to +66°C (–40°F to +151°F)

Relative humidity

10 to 80% noncondensing

Altitude

4900 m (16,000 ft)

†These limits are for optimum equipment performance and reliability.

Introduction 2–3

2.2 Major Components
The major components of the SW500-series cabinet are shown in Figures 2–2 and
2–3 and are as follows:
•

Cabinet—The cabinet is a general-purpose enclosure that provides rackmount capability for standard 44.5 cm (17.5 inch) wide components. The
cabinet uses a standard metric rackmount bolt pattern with holes on 25-mm
(.98-inch) centers. Hinged front and rear doors and removable side panels
allow easy access to the cabinet interior. Casters and leveler feet are provided
to facilitate placement of the cabinet, and base trim skirts are provided to
enhance its appearance.
The cabinet provides six storage shelf positions in the front and four storage
shelf positions in the rear. Storage shelves may generally be installed in any
of the usable shelf positions, although some limitations may be imposed by
either weight or cable length restrictions. One shelf position in the rear of the
cabinet is reserved for power cable distribution unit (CDU) installation,
and one is left open for proper air flow.

2–4 Introduction

•

Shelf brackets—Movable shelf brackets within the cabinet can be configured
to hold any of the StorageWorks shelf types. Shelf brackets must be procured
separately from the cabinet or may come packaged with cabinet options.

•

SBB shelves—StorageWorks building block (SBB) shelves are designed
to house any of the SBBs in the StorageWorks family. The shelves can accept
one or two power supply SBBs as well as a number of peripheral device SBBs.
SBB shelves provide the mechanical mounting, power, and signal interfaces
for the SBBs they house. The shelves are 445 mm (17.5 inch) in width and
are designed to slide into the shelf brackets.

•

SBBs—StorageWorks building blocks (SBBs) are modular computer
peripheral devices or power units from the StorageWorks family. SBBs
may be disk drives, tape drives, shelf power supplies, battery backup units,
or other types of peripherals conforming to the Small System Computer
Interface 2 (SCSI–2) specification. They are housed in both 3½-inch and
5¼-inch wide modular carriers designed to plug into slots in SBB shelves.
Connectors on the rear of each SBB mate with connectors in the SBB shelf to
provide the electrical interface between the two units.

•

Controller shelves—Controller shelves are StorageWorks shelves designed
specifically to house SCSI–2 peripheral controller and cache memory modules.
These shelves may also accept one or two power supply SBBs. Controller
shelves provide the mechanical mounting, power, and signal interfaces for the
units they house. The cabinet allows for the mounting of one controller shelf
in the front and one in the rear.

•

CDUs—Cable distribution units (CDUs) provide the connections necessary
to distribute ac power to the shelves in the SW500 cabinet. CDUs also
provide surge and spike protection, along with a circuit breaker to control
the incoming ac power. As an option, two CDUs can be configured with an
auxiliary ac power source to provide redundant primary power within the
cabinet.

Figure 2–2 Cabinet Major Components

CABINET

SBB
SHELF

SBB

CONTROLLER
SHELF

CDU
(INSTALLED
IN REAR)
SHELF
BRACKET
CXO-4077A-MC

Introduction 2–5

•

TZ8x7-Series Tape Drives–Up to two TZ8x7-series tape drives can be installed
in the upper area of the cabinet, as shown in Figure 2–3. A chassis rail is
used to support the tape drive from one side.

Figure 2–3 TZ8x7-Series Tape Drive

CABINET

TAPE
BEZEL

CHASSIS
RAIL

TZ8x7-SERIES
TAPE DRIVE

CXO-3925A-MC

2–6 Introduction

2.3 Power Configurations
The ac power distribution within the SW500-series cabinet can be configured in
one of the following three ways to provide the desired level of power redundancy
to the cabinet’s shelf-mounted peripheral devices:
•

Single-cabinet power configuration

•

Dual-shelf power configuration

•

Dual-cabinet power configuration

A description of each configuration option is presented in the following sections.

2.3.1 Single-Cabinet Power Configuration
In the single-cabinet power configuration, shown in Figure 2–4, a single ac power
source and CDU (A) are used to supply ac power to a single ac power supply
(A) in each shelf. This is the normal configuration for the cabinet, and it provides
no power redundancy to shelf peripheral devices.
Figure 2–4 Single-Cabinet Power Configuration

AC POWER
SUPPLY A

SBB SHELF

CDU A
PRIMARY
AC POWER
SOURCE

PRIMARY
AC POWER
(BLACK
CABLE)

CXO-3937A-MC

Introduction 2–7

2.3.2 Dual Shelf Power Configuration
In the dual-shelf power configuration, shown in Figure 2–5, a single primary
power source and CDU (A) are used to supply ac power to two ac power supplies
(A and B) in each shelf. If either power supply fails, the shelf remains powered
by the other supply. This configuration provides shelf power supply redundancy
to the shelf ’s peripheral devices. The cabinet supports a maximum of six shelves
in the dual-shelf power configuration. An additional CDU, powered also from the
primary ac power source, can be installed to accommodate up to 10 shelves with
this power configuration.
Figure 2–5 Dual-Shelf Power Configuration

AC POWER
SUPPLY A

AC POWER
SUPPLY B

SBB SHELF

CDU A
PRIMARY
AC POWER
SOURCE

PRIMARY
AC POWER
(BLACK OR
GRAY CABLE)
PRIMARY
AC POWER
(BLACK OR
GRAY CABLE)
CXO-3938A-MC

2–8 Introduction

2.3.3 Dual-Cabinet Power Configuration
In the dual-cabinet power configuration, shown in Figure 2–6, an auxiliary power
source and a second CDU (B) are used to supply ac power to a second ac power
supply (B) in each shelf. If the primary power source, CDU A, or ac power supply
A, fails, the shelf remains powered by ac power supply B. This configuration
provides complete power redundancy to the shelf ’s peripheral devices.
Figure 2–6 Dual-Cabinet Power Configuration

AC POWER
SUPPLY A

AC POWER
SUPPLY B

SBB SHELF

CDU A
PRIMARY
AC POWER
SOURCE

PRIMARY
AC POWER
(BLACK
CABLE)

(GRAY
CABLE)

AUXILLARY
AC POWER
SOURCE
AUXILLARY
AC POWER
CDU B
CXO-3936A-MC

2.4 Cabinet Cooling System
Each StorageWorks shelf contains two rear-mounted blowers that move heat
from the shelf into the cabinet interior. The cabinet structure is such that heated
air moves from the cabinet interior up and out through the unused shelf positions
in the rear. It is then exhausted through the rear door. Logic signals allow the
status of the shelf blowers to be monitored by the host system.

Introduction 2–9

Filler panels and air separation panels are used to properly route heated air
through the cabinet. Filler panels are flat plates that serve as covers for unused
shelf positions. Air separation panels are small baffles that mount just above
and outside the upper-most shelf in each side of the cabinet to prevent heated air
from being drawn down between the cabinet door and the shelf. Heated air would
be drawn back into the shelf and would interfere with proper cooling.

2–10 Introduction

3
Site Preparation
This chapter presents the information necessary to prepare a site for the
installation of the StorageWorks SW500-series cabinet.

3.1 General Considerations
SW500-series cabinets are intended for installation in Class A computer room
environments. Before installing the cabinet, make sure that the following
conditions have been met:
•

The primary power source can supply the required amount of ac power, as
specified in Table 2–1.

•

The site’s primary power receptacles are the correct versions for the power
plugs provided with the cabinet. (The SW5xx–AC cabinet is supplied with a
power cable that has a NEMA 5-20P twist-lock plug. The SW5xx–AD cabinet
is supplied with a power cable that has an IEC 309 plug.)

•

The site floor can safely bear the weight of the cabinet, as specified in
Table 2–1. Keep in mind that the entire weight of the cabinet is borne by the
small surface area of the four leveler feet when the cabinet is installed in its
final position.

•

Adequate space is provided around the cabinet for opening the front and rear
doors, for accessing cables, and for adequate airflow. SW500-series cabinets
are not designed to be fastened to adjacent cabinets. See Figure 3–1 for
specific space requirements.

Site Preparation 3–1

Figure 3–1 Minimum Installation Clearances
31.50 in
600.0 mm

29.33 in
60.0 cm
REAR
DOOR

SW500
SERIES
CABINET

34.45 in
87.5 cm MAX

FRONT
DOOR
29.33 in
60.0 cm

KBO-3805A-MC

•

The cabinet is positioned to allow external interface cables to reach to the
appropriate system units.

•

If the cabinet is to be positioned next to other enclosures, there is sufficient
service loop in any connecting cables to allow the cabinet to be moved out for
access.

3.2 Equipment Grounding
SW500-series cabinets are normally connected to other equipment by one or
more interface buses. For both safety and reliable operation, proper grounding is
required between the cabinet and other equipment.
WARNING
If enclosures are not connected to a common ground, there is a potential
for personal injury as a result of electric shock.

WARNING
When connecting a terminal to a controller within the cabinet, proper
grounding is required to prevent personal injury and equipment damage.
For optimum safety and performance, it is recommended that the
terminal be powered by one of the two utility IEC outlets on the back of
each cable distribution unit (CDU). A spare power cord is furnished with
each cabinet for this purpose.

3–2 Site Preparation

If ground offset voltages generated in the power distribution system are excessive,
data transmission across interface buses can be affected. Significant performance
degradation or possible data corruption could result. SW500-series cabinets are
shipped with a ground strap (Digital part number 12–13756–A8) that is connected
to the rear of the unit. For optimum safety and performance, Digital recommends
that the ground strap be connected to the chassis of the host system.
Make sure that site power distribution systems meet local electrical codes prior to
the installation of SW500-series cabinets.
To make sure that the power distribution system will perform satisfactorily, a
power system survey should be done before installation. The following areas
should be investigated:
•

Do all outlets have power ground connections?

•

Do the power cables on all equipment at the site have grounding prongs?

•

Are all power outlet neutral connections isolated from ground?

•

Are the grounds for all outlets connected to the same power distribution
panel?

•

Are all devices that are connected to the same breaker as the SW500
cabinet Underwriter’s Laboratories (UL) or International Electrotechnical
Commission (IEC) approved?
CAUTION
If there is a deficiency found in any area during the power survey, a
qualified electrician must correct it before installation may begin. Failure
to resolve power survey deficiencies before installing the equipment may
result in personal injury as a result of electric shock.

If no problems are found during the survey, the site grounding system may be
considered to be adequate for personnel safety and reliable SW500-series cabinet
operation.

Site Preparation 3–3

4
Unpacking and Installation
This chapter describes the unpacking, installation, inspection, and powering of
StorageWorks SW500-series cabinets.

4.1 Unpacking the Cabinet
SW500-series cabinets are packed in a corrugated carton attached to a wooden
shipping pallet, as shown in Figure 4–1. Unpack the cabinet as follows:
Note
Before unpacking the equipment, inspect the shipping carton for signs
of external damage. Report any damage to the local carrier and to
Multivendor Customer Services or your local Digital sales office.

CAUTION
Failure to thermally stabilize preconfigured storage subsystems may
damage drive media or associated electronics when the unit is turned on.
Environmental stabilization begins when the equipment is placed in the
room in which it is to be installed.

1. Remove the cover, the fasteners, and the corrugated board from the pallet.
2. Remove the cartons containing the ramp set and skirt kit and set them aside.
3. Cut the shipping straps. Some cabinets are packaged in a plastic or barrier
bag. If the cabinet arrives in a plastic bag, leave the bag in place until the
cabinet has adjusted to the local temperature and humidity, as follows:
•

To ensure proper operation of Digital storage devices, the StorageWorks
building block (SBB) temperature must be within 18–29°C (65–85°F).
Table 4–1 specifies the time required to thermally stabilize SBBs based
on the ambient shipping temperature.

Unpacking and Installation 4–1

Table 4–1 Thermal Stabilization Specifications
Ambient
Temperature
Range °C

Ambient
Temperature
Range °F

Minimum
Stabilization
Time

60 to 66
50 to 59
40 to 49
30 to 39
18 to 29
10 to 17
0 to 9
–10 to –1
–20 to –11
–30 to –21
–40 to –31

140 to 151
122 to 139
104 to 121
86 to 103
65 to 85
50 to 64
32 to 49
14 to 31
–4 to 13
–22 to –5
–40 to –21

3 hours
2 hours
1 hour
30 minutes
None
30 minutes
1 hour
2 hours
3 hours
4 hours
5 hours

•

If condensation is visible on the outside of the storage device, stabilize the
device and the SBB in the operating environment for 6 hours or until the
condensation is no longer visible, whichever is longer. Do not insert the
storage device into the shelf until it is fully stabilized.

•

If condensation is not visible on the outside of the storage device,
thermally stabilize the device for the amount of time specified in
Table 4–1.

4. Once the cabinet is unpacked, examine the front and rear doors, right and left
side panels, top panel, and undercarriage for any apparent damage. Report
such problems immediately.
5. Retain the shipping container and all packing materials.

4–2 Unpacking and Installation

Figure 4–1 Shipping Container Contents

COVER

CARTON
CONTAINING
SKIRT KIT

CORRUGATED
BOARD

FASTENERS

MANUALS
FASTENERS

PLASTIC OR
BARRIER BAG

SHIPPING
STRAPS
PALLET

CARTON
CONTAINING
UNLOADING
RAMPS
CXO-3533A-TI

Unpacking and Installation 4–3

4.2 Removing the Cabinet from the Pallet
This section describes how to remove the cabinet from the pallet.
Use the following procedure to remove the cabinet from the shipping pallet:
1. Remove any packing material remaining on the pallet.
WARNING
Serious personal injury may result if correct safety precautions are not
taken during the unpacking procedure. All personnel should wear safety
glasses. The ramps, ramp side rails, and metal hardware should be
inspected for the following defects:
•

Cracks more than 25 percent of the ramp depth, either across or
lengthwise on the ramp

•

Knots or knotholes going through the thickness of the ramp and
greater than 50 percent of the ramp width

•

Loose, missing, or broken ramp side rails

•

Loose, missing, or bent metal hardware

If any of these defects exist, do not use the ramp. Investigate alternate
means of removing the cabinet or order a new ramp. (The part number
for the ramp set is 99–08897–05.)

2. Remove the two unloading ramps from the carton and inspect them.
3. Attach the ramps by fitting the metal prongs into the holes on the pallet, as
shown in Figure 4–2. Make sure that the arrows on the ramps match up with
the arrows on the pallet.
4. Extend the ramps to their full length.
5. See Figure 4–3 for the location of the shipping bolts. Remove the bolts.
6. Remove the shipping brackets, shown in Figure 4–3, from the cabinet levelers
and set them aside.

4–4 Unpacking and Installation

Figure 4–2 Shipping Pallet Ramp Installation
LEFT
UNLOADING
RAMP

SHIPPING
PALLET

RIGHT RAMP
ATTACHES HERE

RIGHT
UNLOADING
RAMP

EXTEND RAMP TO
FULL LENGTH

CXO-688D_S

Unpacking and Installation 4–5

Figure 4–3 Shipping Bolts and Brackets

LEVELER

SHIPPING
BOLT
SHIPPING
BRACKET

SHR_X1102A_89_SCN

WARNING
The levelers must be raised fully for the cabinet to roll easily down the
unloading ramps. Failure to do so may result in personnel injury as a
result of the cabinet tipping off the pallet or ramp.

7. Loosen the leveler locking nuts and screw the four cabinet levelers all the
way up into the cabinet.
WARNING
Three people are required to unload the cabinet from the shipping pallet.
Failure to use sufficient personnel may result in injury and equipment
damage.

8. Carefully roll the cabinet off the pallet and down the ramps to the floor as
shown in Figure 4–4.

4–6 Unpacking and Installation

Figure 4–4 Removing the Cabinet from the Pallet

CXO-3808A

4.3 Configuring the Cabinet Rack Space
Any shelves to be added to the cabinet should be installed before it is placed in
its permanent position. See Chapter 5 or 6 for the proper location of shelves. See
Chapter 7 for detailed information and procedures regarding shelf bracket and
shelf installation.

4.4 Placing the Cabinet
WARNING
Use extreme caution when rolling the cabinet across the floor. Failure to
raise all leveler feet and to provide a clear path for the cabinet’s casters
may result in the cabinet tipping over and injury to personnel.

Once the cabinet rack space is configured as desired, the cabinet may be rolled to
its final installation position. Secure loose cabinet cables up and out of the way
when rolling the cabinet.

Unpacking and Installation 4–7

4.5 Leveling the Cabinet
Level the cabinet in its final position as follows:
1. Loosen the locknuts on all four leveler feet as shown in Figure 4–5.
2. Turn each leveler hex nut clockwise until the leveler foot contacts the floor.
3. Adjust all four leveler feet until the cabinet is level and the load is removed
from all casters. Verify that the casters spin freely.
4. Tighten the locknuts on all four leveler feet.
Figure 4–5 Leveler Foot Adjustment

LOCKNUT

LEVELER
HEX NUT
LEVELER
FOOT
CXO-3829A

4.6 Installing the Skirt Kit
The skirt kit is packaged separately inside the corrugated carton with the
cabinet. Installation of the skirt kit is optional. Install the skirt kit around the
base of the cabinet as follows:
1. Unpack the skirt kit carton and use Figure 4–6 to identify the right, left,
front, and rear skirts.
2. Position the skirts next to the cabinet, as shown in Figure 4–6.
3. The skirt fasteners are quarter-turn fasteners. Position each skirt against
the cabinet such that the fasteners mate with the receptacles on the cabinet’s
base.
4. Using a screwdriver, push each fastener into its mating receptacle on the
cabinet base and turn it one quarter-turn clockwise.
(Once the skirts are installed, there is a small amount of play that allows
them to be adjusted slightly up or down for proper alignment.)

4–8 Unpacking and Installation

Figure 4–6 Cabinet Skirt Installation

REAR
SKIRT

SIDE
SKIRT

SIDE
SKIRT
FRONT
SKIRT

CXO-3898A-MC

4.7 Inspecting the Cabinet
Inspect the cabinet installation as follows:
1. Make sure that all hardware within the cabinet is fastened securely, and that
there are no loose pieces present in the cabinet interior.
2. Make sure that all four leveler feet are lowered to support the full weight of
the cabinet, and that the cabinet is level.
3. Make sure that there are no obstructions to the airflow from the shelf
blowers. (The side panels may need to be removed to check the shelf blowers.)
4. Check the identification label on the rear of the cabinet to verify that the
cabinet is configured to accept the power available at the site.
5. Make sure that all ac power cords connected from the shelves and cabinet
fans to the CDUs are firmly seated in their connectors at both ends.
6. Make sure that all signal cables internal to the cabinet are firmly seated in
their connectors at both ends.

Unpacking and Installation 4–9

7. Make sure that all SBBs are seated firmly in their shelves.
8. Make sure that any necessary external interface cables are installed and
firmly seated in their connectors.
9. Make sure that the circuit breaker on each CDU is in the

(OFF) position.

4.8 Powering the Cabinet
Once the cabinet has been inspected, power may be applied as follows:
1. Plug the primary power cables from each CDU into the appropriate site power
receptacles.
2. Switch the circuit breaker on each CDU to the (ON) position.

3. Verify that all shelf blowers are operating and that both status indicators
on each shelf power supply SBB are illuminated. Refer to the StorageWorks
Solutions SBB and Shelf User’s Guide for further information on shelf status
indicators.
WARNING
Failure to reduce the leakage current can result in equipment
performance degradation and personal injury due to electric shock.

4. Measure the cabinet’s leakage current. If the leakage current exceeds 3.5 mA
after installation, Digital recommends that power cables with industrial type
B, IEC 950 connectors be installed.
5. Initialize the storage subsystem. Procedures for initializing the cabinet’s
controller and storage devices are specific to the host system to which it is
connected. Refer to the appropriate system documentation for initialization
procedures.

4–10 Unpacking and Installation

5
Configuring SW500 Storage-Only Cabinets
This chapter describes the configuration of the SW500 storage-only cabinet. This
storage subsystem uses only the StorageWorks BA350–Sx shelf type. The Small
Computer Systems Interface 2 (SCSI–2) is used as the communications path
between the cabinet’s storage devices and their external controllers. SW500
storage-only cabinets can be configured with up to 10 storage shelves.
WARNING
While working in the cabinet interior, ac power must be removed from
cabinet components. Failure to do so may result in personal injury as a
result of electric shock.

Prior to performing any of the procedures in this chapter, remove ac power from
the cabinet components. If the cabinet is operating, spin down all disk drives and
halt all tape drives in the cabinet. Switch the circuit breaker on the front panel
of the cabinet’s cable distribution units (CDUs) to the
(OFF) position.

5.1 Cabinet Configuration
WARNING
Failure to install cabinet components in the proper order could result in
cabinet instability, injury to personnel, and damage to equipment.

Note
To maintain FCC compliance and proper airflow, filler panels and air
separation panels must be installed as specified for your particular
cabinet configuration. See Section 5.2 for further information.

The order of shelf installation in SW500 storage-only cabinets is predetermined to
allow for cabinet loading and cable length factors. Figures 5–1 and 5–2 show the
layout of both the front and rear of the storage-only cabinet. To prevent cabinet
instability, shelves must be installed in the order shown by the position numbers
in the illustrations.

Configuring SW500 Storage-Only Cabinets 5–1

5.1.1 Shelf Locations Without Tape Drives
Figure 5–1 shows the proper cabinet rail mounting holes for each shelf location
when TZ8x7-series tape drives are not installed. Shelf mounting hole numbers
are counted from the top of each rail. The hole number assignments shown in the
figure identify the mounting holes for each shelf bracket’s top mounting stud. See
Chapter 7 for detailed procedures pertaining to the mounting of StorageWorks
shelves.
Figure 5–1 SW500 Storage-only Cabinet Shelf Locations Without Tape Drives

MOUNTING
LOCATIONS

FRONT-TO-REAR
SCSI-2 CABLE
ROUTING POINTS

HOLE
#2

STORAGE
POSITION S6

HOLE
#8

STORAGE
POSITION S5

CDU B

HOLE
#14

STORAGE
POSITION S4

STORAGE
POSITION S10

HOLE
#7
HOLE
#10
HOLE
#14

HOLE
#20

STORAGE
POSITION S3

STORAGE
POSITION S9

HOLE
#20

HOLE
#26

STORAGE
POSITION S1

STORAGE
POSITION S8

HOLE
#26

STORAGE
POSITION S2

STORAGE
POSITION S7

HOLE
#32

CABINET FRONT

CABINET REAR

HOLE
#32

CDU A

CXO-3900C-MC

5.1.2 TZ8x7-Series Tape Drive/Shelf Locations
Figure 5–2 shows the proper cabinet rail mounting holes for each shelf location
when TZ8x7-series tape drives are installed. Mounting hole numbers are counted
from the top of each rail. The hole number assignments shown in the figure
identify the mounting holes for each shelf bracket’s top mounting stud and for the
tape drive chassis rail round standoff locating hole. See Chapter 7 for detailed
procedures pertaining to the mounting of StorageWorks shelves. See Chapter 8
for detailed procedures pertaining to the mounting of the tape drive. Note that
the TZ8x7-series tape drive extends completely through the cabinet and uses the
upper two shelf mounting positions in the front and the rear.

5–2 Configuring SW500 Storage-Only Cabinets

Figure 5–2 SW500 Storage-only Cabinet Shelf and Tape Drive Locations
MOUNTING
LOCATIONS

MOUNTING
LOCATIONS
HOLE
#3

TAPE
TAPE
POSITION T2 POSITION T1

FRONT-TO-REAR
SCSI-2 CABLE
ROUTING POINTS

HOLE
#3

TAPE
TAPE
POSITION T1 POSITION T2

HOLE
#14

STORAGE
POSITION S4

HOLE
#20

STORAGE
POSITION S3

CDU B

STORAGE
POSITION S1

STORAGE
POSITION S6

HOLE
#19
HOLE
#22
HOLE
#26

STORAGE
POSITION S2

STORAGE
POSITION S5

HOLE
#32

CABINET FRONT

CABINET REAR

HOLE
#26
HOLE
#32

CDU A

CXO-3901C-MC

5.2 Filler and Air Separation Panels
Note
To maintain FCC/VDE compliance and proper airflow, filler panels and
air separation panels must be installed as specified for your particular
cabinet configuration and in accordance with the following guidelines.

Filler panels can be installed in empty shelf positions to control air flow and
electromagnetic emissions, and for the purpose of cosmetics. Filler panels are
normally supplied and installed based on the specific configuration of the SW500
storage-only cabinet ordered. At least two filler panels are shipped with each
cabinet. Install filler panels using the following guidelines:
•

If your cabinet has a particular filler panel configuration that was factoryinstalled, do not remove the panels unless you are reconfiguring the
cabinet.

•

If you are adding shelves or reconfiguring your cabinet, use filler panels in all
open slots below the highest shelf installed. This applies in the front and the
rear of the cabinet.

•

To ensure proper cooling air flow, never install filler panels above the highest
shelf installed in the cabinet.

Configuring SW500 Storage-Only Cabinets 5–3

Two air separation panels are supplied with each cabinet. Install an air
separation panel just above the upper-most shelf in the front and the rear of the
cabinet. Air separation panels are not required above TZ8x7-series tape drives,
or above storage position S4 when one or two tape drives are installed. See
Chapter 7 for complete details on the installation of air separation panels.

5.3 Power Configuration
The power in SW500 storage-only cabinets can be configured in any of the forms
described in Section 2.3. See Chapter 9 for detailed procedures on configuring
power within the cabinet.

5.4 Signal Cabling and Routing
Signal cabling in the SW500 storage-only cabinet consists of intershelf SCSI–2
cabling and shelf-to-host SCSI–2 controller cabling.

5.4.1 Shelf SCSI–2 Cable Selection and Connection
The procedures involved in SCSI bus design and connection are specific to the
components being bused together. Refer to the following publications for details
on the selection of SCSI–2 cables and their connection to the cabinet’s shelves:
•

StorageWorks Solutions Family Configuration Guide

•

StorageWorks Solutions SBB and Shelf User’s Guide

5.4.2 SCSI–2 Cable Routing
SCSI–2 signal cables enter SW500 storage-only cabinets through openings in the
rear edges of the base pan of the cabinet. Cables destined for rear shelves are
normally routed along the base pan to the right-most vertical cabinet rail. They
are then routed to the the right-hand side of each rear shelf along the rail.
SCSI–2 cables destined for front shelves are routed along the base pan and up the
right-hand vertical cabinet rail to a point just above the CDUs (refer to Figures
5–1 and 5–2). The cables then pass into the interior of the cabinet and across to
an opening in the vertical chassis rail behind the two right-hand shelf brackets
of positions S1 and S2. They pass through the opening and out to the front of
the cabinet through the space between the S1/S2 shelf brackets. On the front of
the cabinet, cables are normally routed along the right vertical cabinet rail to the
right-hand side of each shelf along the rail.
Half-meter, SCSI–2 cables are normally used to link adjacent shelves to each
other.
When TZ8x7-series tape drives are installed, there is a space between the bottom
of the drives and shelf position S1 (refer to Figure 5–2). This space is normally
used for the routing of SCSI–2 cables from the rear to the front of the cabinet.

5.4.3 General Cable Routing Rules
Cables should be routed and installed with the following rules in mind:
WARNING
Cabinet rail edges may be sharp and can slice or abrade skin or cable
insulation.

5–4 Configuring SW500 Storage-Only Cabinets

•

Cables should be routed in a manner that allows the shortest overall cable
length.

•

Signal cables should be kept away from power cables.

•

Care should be taken to avoid sharp cable bends.

•

Cables should be routed to allow StorageWorks building blocks (SBBs) and
controller modules to be freely inserted and removed from their shelves.

•

Cables should not be routed tightly against the metal edges of the cabinet.

•

Signal cable bundling along the outside of the cabinet rails should be done to
allow the doors to easily close.

•

Cables should be fastened along cabinet rails using cable ties or nylon cable
clamps, U-nuts, and screws. Added cables should be included in existing
cable clamps where possible.

Configuring SW500 Storage-Only Cabinets 5–5

6
Configuring SW500 Controller/Storage
Cabinets
This chapter describes the configuration of SW500 controller/storage cabinets.
These storage subsystems use StorageWorks HSZ10™, HSZ15, HSJ40™, or
HSZ40 controllers mounted in BA350–Ex or BA350–Mx shelves. Storage devices
are housed in BA350–Sx shelves.

6.1 HS-Family Controllers
The SW500-series cabinet is qualified for use with the following HS-family
controllers:
•

HSJ40 controller—The HSJ40 Controller uses Digital’s CI™ interface as the
communication path with the host computer and uses the Small Computer
System Interface 2 (SCSI–2) as the storage device bus. Two HSJ40 controllers
can be housed in a single StorageWorks BA350–Mx controller shelf. Factory
preconfigured cabinets set up to use the HSJ40 controller are designated by
the model number SW51x.

•

HSZ10 and HSZ15 controllers—HSZ10 and HSZ15 controllers use the SCSI–2
interface as the communication path with the host computer, as well as for
the storage device bus. Two HSZ10 or HSZ15 controllers can be installed in a
single StorageWorks BA350–Ex shelf. The StorageWorks BA350–Ex shelf is a
controller/storage shelf combination with an integral backplane. It takes up
two adjacent shelf positions in the cabinet.

•

HSZ40 controller—The HSZ40 controller uses the SCSI–2 interface as the
communication path with the host computer, as well as for the storage
device bus. Two HSZ40 controllers can be installed in a single StorageWorks
BA350–Mx shelf.

SW500 controller/storage cabinets can be configured with up to four controllers in
redundant pairs and with up to nine storage shelves. The configuration of HSJ40,
HSZ10, HSZ15, and HSZ40 cabinets is very similar. The differences lie in the
host interface cable configuration used and the fact that a StorageWorks DWZZA
SCSI signal converter may be used with the HSZxx controllers.
Refer to the StorageWorks Array Controller HS Family of Array Controllers User’s
Guide and the StorageWorks BA350–MA Controller Shelf User’s Guide for further
information on the installation and configuration of the BA350–Mx shelf. The
BA350–Ex shelf is a major component of the StorageWorks RAID Array 110
subsystem. Refer to the StorageWorks RAID Array 110 Subsystem User’s Guide
for further information on the installation and configuration of the BA350–Ex
shelf.

Configuring SW500 Controller/Storage Cabinets 6–1

6.2 Cabinet Configuration
WARNING
While working in the cabinet interior, ac power must be removed from the
cabinet components. Failure to do so may result in personal injury as a
result of electric shock.

Prior to performing any of the procedures in this chapter, remove ac power from
the cabinet components. If the cabinet is operating, spin down all disk drives and
halt all tape drives in the cabinet. Switch the circuit breaker on the front panel
(OFF) position.
of the cabinet’s CDUs to the
WARNING
Failure to install cabinet components in the proper order could result in
cabinet instability, injury to personnel, and damage to equipment.

The order of shelf installation in SW500 controller/storage cabinets is
predetermined to allow for cabinet loading and cable length factors. Figures
6–1 and 6–2 show the layout of both the front and rear of the controller/storage
cabinet. To prevent cabinet instability, shelves must be installed in the order
shown by the position numbers in the illustrations.

6.2.1 Shelf Locations Without Tape Drives
Figure 6–1 shows the proper cabinet rail mounting holes for each shelf location
when TZ8x7-series tape drives are not installed. Note that storage position S7
may be used for the installation of a second controller shelf. Shelf mounting hole
numbers are counted from the top of each rail. The hole number assignments
shown in the figure identify the mounting holes for each shelf bracket’s top
mounting stud. See Chapter 7 for detailed procedures pertaining to the mounting
of StorageWorks shelves.
Note
The BA350–Ex modular storage shelf consists of a controller shelf with an
attached storage shelf. In systems using BA350–Ex shelves, the storage
shelf directly below each controller shelf is physically attached to and
functionally dedicated to its respective controller.

6–2 Configuring SW500 Controller/Storage Cabinets

Figure 6–1 SW500 Controller/Storage Cabinet Shelf Locations Without Tape Drives
CI BULKHEAD
FRONT-TO-REAR
SCSI-2 CABLE
ROUTING POINTS

MOUNTING
LOCATIONS

HOLE
#2

STORAGE
POSITION S5

HOLE
#8

STORAGE
POSITION S4

CDU B

HOLE
#14

STORAGE
POSITION S3

STORAGE
POSITION S9

HOLE
#14

HOLE
#20

CONTROLLER
POSITION C1

STORAGE
POSITION S8

HOLE
#20

HOLE
#26

STORAGE
POSITION S1

CONTROLLER
POSITION C2
STORAGE
POSITION S7

HOLE
#26

STORAGE
POSITION S2

STORAGE
POSITION S6

HOLE
#32

CABINET FRONT

CABINET REAR

HOLE
#32

CDU A

INTERNAL
CI CABLE
ROUTING
POINT

HOLE
#7
HOLE
#10

CXO-3902B-MC

6.2.2 TZ8x7-Series Tape Drive/Shelf Locations
Figure 6–2 shows the proper cabinet rail mounting holes for each shelf location
when TZ8x7-series tape drives are installed. Mounting hole numbers are counted
from the top of each rail. The hole number assignments shown in the figure
identify the mounting holes for each shelf bracket’s top mounting stud and for the
tape drive chassis rail round standoff locating hole. See Chapter 7 for detailed
procedures pertaining to the mounting of StorageWorks shelves. See Chapter 8
for detailed procedures pertaining to the mounting of TZ8x7-series tape drives.
Note that the TZ8x7-series tape drive extends completely through the SW500
cabinet and utilizes the upper two shelf mounting positions in the front and the
rear.
Note
The BA350–Ex modular storage shelf consists of a controller shelf with an
attached storage shelf. In systems using BA350–Ex shelves, the storage
shelf directly below each controller shelf is physically attached to and
functionally dedicated to its respective controller.

Configuring SW500 Controller/Storage Cabinets 6–3

Figure 6–2 SW500 Controller/Storage Cabinet Shelf and Tape Drive Locations
MOUNTING
LOCATIONS

MOUNTING
LOCATIONS
HOLE
#3

TAPE
TAPE
POSITION T2 POSITION T1

HOLE
#14

STORAGE
POSITION S3

HOLE
#20

CONTROLLER
POSITION C1

HOLE
#26

STORAGE
POSITION S1

HOLE
#32

FRONT-TO-REAR
SCSI-2 CABLE
ROUTING POINTS

HOLE
#3

TAPE
TAPE
POSITION T1 POSITION T2

CI BULKHEAD

HOLE
#19
HOLE
#22
HOLE
#26

CDU B
INTERNAL
CI CABLE
ROUTING
POINT

CDU A
CONTROLLER
POSITION C2
STORAGE
POSITION S5

STORAGE
POSITION S2

STORAGE
POSITION S4

CABINET FRONT

CABINET REAR

HOLE
#32

CXO-3903A-MC

6.3 Filler and Air Separation Panels
Note
To maintain FCC compliance and proper airflow, filler panels and air
separation panels must be installed as specified for your particular
cabinet configuration and in accordance with the following guidelines.

Filler panels can be installed in empty shelf positions to control air flow and
electromagnetic emissions and for the purpose of cosmetics. Filler panels are
normally supplied and installed based on the specific configuration of the SW500
controller/storage cabinet ordered. At least two filler panels are shipped with
each cabinet. Install filler panels using the following guidelines:
•

If your cabinet has a particular filler panel configuration that was factoryinstalled, do not remove the panels unless you are reconfiguring the
cabinet.

•

If you are adding shelves or reconfiguring your cabinet, use filler panels in all
open slots below the highest shelf installed. This applies in the front and the
rear of the cabinet.

•

To ensure proper cooling air flow, never install filler panels above the highest
shelf installed in the cabinet.

6–4 Configuring SW500 Controller/Storage Cabinets

Two air separation panels are supplied with each cabinet. Install an air
separation panel just above the upper-most shelf in the front and the rear of the
cabinet. Air separation panels are not required above TZ8x7-series tape drives,
or above storage position S3 when one or two tape drives are installed. See
Chapter 7 for details on the installation of air separation panels.

6.4 Power Configuration
The power in SW500 controller/storage cabinets can be configured in any of
the forms described in Section 2.3. See Chapter 9 for detailed procedures on
configuring power within SW500 controller/storage cabinets.

6.5 Host CI Signal Cabling and Routing
In installations using HSJ40 controllers, the interface signal cabling for each
controller consists of two parts:
•

An internal CI cable connected to the host port on the controller. The cable
terminates at the other end with a cable connector block.

•

Four host CI cables, connecting the cable connector block to the host.

A CI bulkhead is used to mount the cable connector block to the cabinet. CI
bulkheads are small brackets mounted in the unused shelf position above the
CDUs (refer to Figures 6–1 and Figure 6–2). The connector block on the end of
each internal CI cable is mounted to the CI bulkhead, and the host CI cables are
connected to the connector block, as shown in Figure 6–3.
Each CI bulkhead can accept two internal CI cables, enough for one controller
shelf containing two controllers. Two CI bulkheads are supplied with each
cabinet.

6.5.1 CI Bulkhead Installation
Install the CI bulkheads as follows (see Figure 6–3):
1. Choose a mounting position on the inner flange of the right rear vertical
chassis rail above the upper-most CDU in the cabinet, as shown in the
illustration. Choose a position as close to the top of the cabinet as possible.
2. Position a CI bulkhead against the vertical chassis rail, as shown.
3. Fasten the CI bulkhead to the chassis rail with two screws and KEP nuts, as
shown.
4. Repeat steps 1–3 for the left-hand CI bulkhead, choosing a mounting position
on the inner flange of the left rear vertical chassis rail directly across from
the right-hand CI bulkhead.

6.5.2 Internal CI Cable Routing
Route the internal CI cables as follows (refer to Figure 6–3):
•

For rear-mounted controllers:
1. Remove the four connector block retaining nuts and flat washers from the
internal CI cable connector block. (Discard the flat washers.)

Configuring SW500 Controller/Storage Cabinets 6–5

Figure 6–3 CI Bulkhead and Internal CI Cable Installation

INNER
FLANGE
HEX NUT
10-32, KEP
(2 PLACES)

RIGHT REAR
VERTICAL
CABINET RAIL

SCREW, SEMS
10-32 x .625
(2 PLACES)

B
PATH
A

CHANNEL #
NODE
CLUSTER

CI INTERNAL CABLE
CONNECTOR BLOCK

CI BULKHEAD
CONNECTOR
BLOCK
RETAINING NUT
(4 PLACES,
WASHERS NOT
USED)

HOST CABLE

CXO-3931A-MC

2. Insert the connectors on the internal CI cable connector block into one of
the free positions on the CI bulkhead, as shown. Fasten the connector
block to the bulkhead with the four retaining nuts, as shown.
3. Route the cable from the CI bulkhead down along the right-hand vertical
cabinet rail to the rear-mounted controller shelf.
4. Repeat for each internal CI cable to be connected to the rear-mount
controller.
•

For front-mounted controllers:
1. Remove the four connector block retaining nuts and flat washers from the
internal CI cable connector block. (Discard the flat washers.)
2. Insert the connectors on the internal CI cable connector block into one of
the free positions on the CI bulkhead, as shown. Fasten the connector
block to the bulkhead with the four retaining nuts, as shown.

6–6 Configuring SW500 Controller/Storage Cabinets

3. Pass the cable across the interior of the cabinet to the opening in the front
vertical cabinet rail behind the two right-hand shelf brackets of positions
C1 and S3 (refer to Figures 6–1 and 6–2).
4. Pass the cable through the opening and out to the front of the cabinet
through the opening next to the C1/S3 shelf brackets.
5. Route the cable to the front controller in position C1.
6. Repeat for each internal CI cable to be connected to the front-mounted
controller.

6.5.3 Host-to-CI Bulkhead Cable Routing
Route the CI cables from each host to the appropriate CI bulkhead as follows:
1. Pass the host CI cables into the cabinet through the openings in the rear
edges of the base pan of the cabinet.
2. Bundle and route the four host CI cables along the base pan to the rear righthand vertical rail and upward to the open shelf position above the upper-most
CDU.
3. Once at the open shelf position, route the host CI cables to the appropriate
internal CI cable connector block, already installed on either the right or left
CI bulkhead.
4. Screw the connector on each host CI cable onto its correct connector on the
internal CI cable connector block. (Refer to the StorageWorks Array Controller
HS Family of Array Controllers User’s Guide for information regarding the
connections to the CI cable connector block.) If your cabinet contains multiple
controllers, make sure that you connect the host CI cables to the correct
internal CI cable.
5. Repeat steps 1–4 for each set of four host CI cables from the host.

6.6 Host SCSI–2 Signal Cabling and Routing
In installations where the controllers use the SCSI–2 interface to communicate
with the host, the interface cables are routed directly from the controller to the
host. A bulkhead is not used.

Configuring SW500 Controller/Storage Cabinets 6–7

Note
If a StorageWorks DWZZA–AA SCSI signal converter is being used on the
host interface, it may be desirable to house the converter in the SW500
cabinet. If either the front or rear lower shelf position is unused, the
converter may be placed in the base pan of the cabinet. In this case, the
host interface cable is routed through openings in the rear edges of the
base pan of the cabinet and directly to the single-ended side of the signal
converter. The cable connecting to the differential side of the converter is
then routed as described in the following paragraphs.

Host SCSI–2 Signal Cable Routing
Route the host SCSI–2 interface cables to rear or front-mounted controllers as
follows:
•

For rear-mounted controllers:
1. Route the cable into the SW500 controller/storage cabinet through the
openings in the rear edges of the base pan of the cabinet.
2. Route the cable along the base pan to the rear right-hand vertical cabinet
rail.
3. Route the cable upward along the right-hand vertical cabinet rail to the
rear-mounted controller shelf.
4. Repeat for each host SCSI–2 cable to be connected to a rear-mounted
controller.

•

For front-mounted controllers:
1. Route the cable into the SW500 controller/storage cabinet through the
openings in the rear edges of the base pan of the cabinet.
2. Route the cable along the base pan to the rear right-hand vertical cabinet
rail.
3. Route the cable upward along the right rear vertical cabinet rail to the
open shelf position just above the upper-most CDU.
4. Pass the cable across the interior of the cabinet to the opening in the front
vertical cabinet rail behind the two right-hand shelf brackets of positions
C1 and S3 (refer to Figures 6–1 and 6–2).
5. Pass the cable through the opening and out to the front of the cabinet
through the opening next to the C1/S3 shelf brackets.
6. Route the cable to the front controller shelf in position C1.
7. Repeat for each host SCSI–2 cable to be connected to a front-mounted
controller.

6.7 Shelf SCSI–2 Signal Cabling and Routing
The following sections describe the routing of SCSI–2 signal cabling from the
cabinet’s controllers to its shelves.

6–8 Configuring SW500 Controller/Storage Cabinets

6.7.1 Shelf SCSI–2 Cable Selection and Connection
The procedures involved in SCSI bus design and connection are specific to the
components being bused together. Refer to the following publications for details
on the selection of SCSI–2 cables and their connection to the cabinet’s shelves:
•

StorageWorks Solutions Family Configuration Guide

•

StorageWorks Solutions SBB and Shelf User’s Guide

•

StorageWorks Array Controller HS Family of Array Controllers User’s Guide

•

StorageWorks BA350-MA Controller Shelf User’s Guide

•

StorageWorks RAID Array 110 Subsystem User’s Guide

6.7.2 SCSI–2 Cable Routing
SCSI–2 cables from the front controller to the controller’s associated front storage
shelves are normally routed along the right-hand vertical cabinet rail to the
right-hand side of each shelf. Half-meter, SCSI–2 cables are normally used to
link adjacent shelves or tape drives to each other.
SCSI–2 cables connecting front shelves to rear shelves pass to the rear of the
cabinet via the opening between the right-hand shelf brackets at positions S4
and S5 (refer to Figure 6–1). The cables pass through this opening and into the
interior of the cabinet through the opening in the vertical cabinet rail behind
the S4/S5 brackets. They then pass across the interior of the cabinet to the
unused shelf position above the CDUs. They pass through the right-hand side
of the unused shelf position and down along the right-hand cabinet rail to the
appropriate rear shelves.
When TZ8x7-series tape drives are installed, there is a space between the bottom
of the drives and shelf position S3 (refer to Figure 6–2). This space is normally
used for the routing of SCSI–2 cables from the rear to the front of the cabinet.
Table 6–1 specifies the SCSI–2 cable length required to connect each controller
position with its companion shelves in SW500 controller/storage cabinets.
Table 6–1 SW500 Controller/Storage Cabinet SCSI–2 Cable Lengths
Controller Position

Storage Shelf/Tape Position

Cable Length
Required

Front shelves

1.00 m (3.28 ft)

Rear shelves

2.00 m (6.56 ft)

T1, T2

2.00 m (6.56 ft)

Rear shelves

1.00 m (3.28 ft)

6.8 General Signal Cable Routing Rules
Cables should be routed and installed with the following rules in mind:
WARNING
Cabinet rail edges may be sharp and can slice or abrade skin or cable
insulation.

Configuring SW500 Controller/Storage Cabinets 6–9

•

Cables should be routed in a manner that allows the shortest overall cable
length.

•

Signal cables should be kept away from power cables.

•

Care should be taken to avoid sharp cable bends.

•

Cables should be routed to allow SBBs and controller modules to be freely
inserted and removed from their shelves.

•

Cables should not be routed tightly against the metal edges of the cabinet.

•

Signal cable bundling along the outside of the cabinet rails should be done to
allow the doors to easily close.

•

Cables should be fastened along cabinet rails using cable ties or nylon cable
clamps, U-nuts, and screws. Added cables should be included in existing
cable clamps where possible.

6–10 Configuring SW500 Controller/Storage Cabinets

7
Installing StorageWorks Shelves
This chapter describes the installation of StorageWorks shelves into SW500-series
data center cabinets. Procedures for horizontal front and rear shelf installation
are presented.
There are two types of shelf brackets: shelf brackets with screw mounts and shelf
brackets with tab mounts.
Installing air separation panels in both the front and rear of the cabinet also are
covered.

7.1 General Shelf Mounting Considerations
Note
In the following descriptions and procedures, the terms front and rear
refer to locations in the cabinet. The terms inner and outer refer to
positions on the shelf brackets.

Each metric bracket set consists of a pair of shelf brackets, stop brackets, and
locking brackets. See Figure 7–2 for examples of these components.
There are two types of shelf brackets: shelf brackets with screw mounts and shelf
brackets with tab mounts.
The stop brackets are attached to the inner portion of the shelf brackets to
position the shelf within the brackets. The locking brackets fix the shelf in place.
Various combinations of stop positions and locking bracket size are necessary to
situate a particular shelf for proper clearance from the cabinet doors.
The shelf bracket and stop bracket parts are used to mount all types of
StorageWorks shelves in all locations. The bracket set for shelves mounted
in various positions in the cabinet differs only in that the locking brackets are
unique parts sized for specific cabinet positions.
An air separation panel is required in both the front and rear of the cabinet to
prevent the recirculation of heated air to the cabinet’s shelves. The air separation
panels are mounted just above the upper-most shelf in each side of the cabinet.
Air separation panels normally are installed after shelf installation.

Installing StorageWorks Shelves 7–1

7.2 Shelf Bracket Types
SW500 cabinets can come preconfigured with screw-mounted or tab-mounted shelf
brackets. Cabinets that have been field modified can contain both types of shelf
brackets. See the following descriptions to determine your cabinet configuration.

7.2.1 Screw-Mounted Shelf Brackets
A typical screw-mounted bracket set is shown in Figure 7–2. The shelf bracket
used in this set can be identified by the two screw holes between the front of the
bracket and the stop bracket screw holes.
In the horizontal position, the screw-mounted brackets are attached to the
vertical cabinet rails with six screws.

7.2.2 Tab-Mounted Shelf Brackets
A typical tab-mounted bracket set is shown in Figure 7–4. The shelf bracket used
in this set can be identified by the formed metal slot with four mounting tabs
between the front of the bracket and the stop bracket screw holes.
In the horizontal position, the tab-mounted brackets are attached to the vertical
cabinet rails with four M5 KEP nuts and four mounting tabs.

7.3 Shelf Bracket Kit Configurations
Before mounting the metric shelf bracket kit, check the contents of the bracket kit
against the parts list. See Table 7–1 for the SW500 Metric Shelf Screw-Mounted
Bracket Kit Parts List. See Table 7–2 for the SW500 Metric Shelf Tab-Mounted
Bracket Kit Parts List.
Table 7–1 SW500 Metric Shelf Screw-Mounted Bracket Kit Parts List
Kit Part Number 70–30092–05
Digital Part Number

Description

Quantity

74–46442–01

Shelf mounting bracket

74–46441–01

Front shelf locking bracket

74–46441–02

Front shelf locking bracket

74–46441–03

Front shelf locking bracket (not used)

74–46439–01

Rear shelf locking bracket

74–46439–02

Rear shelf locking bracket

74–46440–01

Stop bracket

90–00063–39

Screw, THRL 10–32 TRS .500 ARCS

90–07786–00

U-nuts, 10–32

7–2 Installing StorageWorks Shelves

Table 7–2 SW500 Metric Shelf Tab-Mounted Bracket Kit Parts List
Kit Part Number 70–30092–01
Digital Part Number

Description

Quantity

74–47506–01

Shelf mounting bracket

74–46441–01

Front shelf locking bracket

74–46441–02

Front shelf locking bracket

74–46441–03

Front shelf locking bracket (not used)

74–46439–01

Rear shelf locking bracket

74–46439–02

Rear shelf locking bracket

74–46440–01

Stop bracket

90–00063–39

Screw, THRL 10–32 TRS .500 ARCS

90–40148–02

Nut, KEP, M5, 8 MMAF, CSZ

7.4 Cabinet Preparation and Shutdown
Before mounting the metric shelf bracket kit, perform the following actions:
WARNING
While working in the cabinet interior, ac power must be removed from
cabinet components. Failure to do so can result in personnel injury as a
result of electric shock.

1. If the cabinet is installed and operating, spin down all disk drives and halt
all tape drives in the cabinet.
2. Remove ac power from cabinet components by switching the circuit breaker
on the front panel of the cabinet’s power controllers or cable distribution units
to the OFF or
position.
After you have made sure that all the parts are present and that ac power has
been removed from the cabinet components, you can begin shelf installation.

7.5 Accessing the Cabinet Rack Space
In maximum configurations when access to the interior of the cabinet is limited,
external cabinet panels might need to be removed before shelves can be installed
or reconfigured. Section 7.5.1 presents procedures for removing exterior cabinet
panels.
The front and rear cabinet doors are held closed by door locks mounted on
the smooth vertical panel of each door. The locks are released by turning
counterclockwise with a 5/32-inch hex wrench.

7.5.1 Removing the Exterior Cabinet Panels
As shown in Figure 7–1, there are three side panel hanger clips on each side
of the cabinet. A matching set of hanger clips are attached to each side panel.
Remove the side panels as follows:

Installing StorageWorks Shelves 7–3

Figure 7–1 Exterior Cabinet Panel Removal and Installation

FASTENER
PIN
(4 PLACES)
NYLON SNAP
FASTENER
(4 PLACES)

TOP COVER

M6x40mm BOLT
(4 PLACES)

LIP

SIDE PANEL
HANGER
CLIPS
UPPER
SIDE PANEL
HANGER
CLIP

LOWER
SIDE PANEL
HANGER
CLIPS

CABINET
FRONT
SIDE PANEL

7–4 Installing StorageWorks Shelves

CXO-3787A-MC

1. Move the cabinet away from adjacent enclosures as necessary.
2. Loosen the top cover by pushing up on its front and rear edges until it snaps
free of its fasteners.
WARNING
The top cover is heavy and awkward to lift. Removing it requires two
people. Failure to use sufficient personnel can result in personnel injury
or equipment damage.

3. Using two people, lift the top cover from the cabinet and set it aside.
4. Remove the bolts attaching the side panels to the top side rails of the cabinet.
5. Grasp a panel along its front and rear edges and lift up until the hanger clips
disengage. Lift the panel away from the cabinet.
6. Repeat the previous step to remove the other panel.
7. Install the horizontal shelf brackets using the following procedures.

7.6 Installing the Shelves
There are two types of shelf brackets: shelf brackets with screw mounts and shelf
brackets with tab mounts. See Section 7.6.1 for shelf brackets with screw mounts.
See Section 7.6.2 for shelf brackets with tab mounts and mounting studs.

7.6.1 Installing Shelves With Screw Mounts
Shelf bracket installations for front and rear shelves using screw mounts are
shown in Figures 7–2 and 7–3. Using the illustrations as a guide, install the
shelf brackets as follows:
WARNING
Cabinet rail edges can be sharp and can slice or abrade skin or cable
insulation.

Note
Two small ESD grounding posts are provided with the cabinet. One is
located on a front vertical cabinet rail, and one on a rear rail. Should an
ESD grounding post interfere with the installation of a shelf, move the
post out of the way to any free hole on the cabinet.

5. Remove the shelf bracket and install two U-nuts along the inner flange of the
cabinet rail at the holes marked in step 4.
6. Position and fasten the shelf bracket to the outer flange of the cabinet rail
with two screws, as shown.
7. Fasten the bracket to the U-nuts with two screws.
8. Using Table 7–3, determine the correct stop bracket position for the shelf type
being installed.
Table 7–3 Shelf Stop Bracket Positions
StorageWorks Shelf Type

Front Shelf Stop Bracket
Position

Rear Shelf Stop Bracket
Position

BA350–Sx

BA350–Mx

9. Insert the tab on the stop bracket into the slot at the correct stop position on
the shelf bracket. Fasten the stop bracket to the shelf bracket, as shown.
10. Repeat steps 2 through 9 to mount the companion shelf bracket on the
opposite cabinet rail. To be sure of proper alignment of the brackets, use care
to mount the bracket to the correct rail mounting holes.
11. With the power supply end of the shelf to the left and the blowers facing
the cabinet, slide the shelf into the shelf brackets until it contacts the inner
stop brackets. The shelf should slide smoothly into the brackets. If it binds,
remove it and check the alignment of the shelf brackets. The shelf bracket
mounting screws might need to be loosened slightly to allow the brackets
to align with the shelf. Retighten the screws when the shelf brackets are
properly aligned.
12. Using Table 7–4, verify that you have the correct locking bracket part number
for the shelf type and position (front or rear) being installed.
Table 7–4 Shelf Locking Bracket Part Numbers
StorageWorks Shelf Type

Front Shelf Locking Bracket
Part No.

Rear Shelf Locking
Bracket Part No.

BA350–Sx

74–46441–01

74–46439–01

BA350–Mx

74–46441–02

74–46439–02

13. Once the shelf is positioned within the shelf brackets, install the shelf ’s
locking brackets to both shelf brackets with screws, as shown. Push the
locking bracket against the shelf to seat it before tightening the screws.

7–6 Installing StorageWorks Shelves

Figure 7–2 Horizontal Shelf Bracket Installation
STOP
POSITION
#4

U-NUT, 10-32
(2 PLACES)

FRONT
VERTICAL
CABINET
RAIL

STOP
POSITION
#3
STOP
POSITION
#2

STOP
POSITION
#1

STOP
POSITION
#5

FRONT SHELF
LOCKING
BRACKET

STOP
BRACKET

SCREW, THRL 10-32
TRS .500 XRCS
(7 PLACES)
SHELF MOUNTING
BRACKET (LEFT
FRONT POSITION)

CXO-3768A-MC

Installing StorageWorks Shelves 7–7

Figure 7–3 Rear Shelf Bracket Installation
STOP
POSITION
#4

U-NUT, 10-32
(2 PLACES)

REAR
VERTICAL
CABINET
RAIL

STOP
POSITION
#3
STOP
POSITION
#2

STOP
POSITION
#1

STOP
POSITION
#5

REAR SHELF
LOCKING
BRACKET

STOP BRACKET

SCREW, THRL 10-32
TRS .500 XRCS
(7 PLACES)
SHELF MOUNTING
BRACKET (LEFT
REAR POSITION)

CXO-3767A-MC

7–8 Installing StorageWorks Shelves

7.6.2 Installing Shelves with Tab Mounts
Shelf bracket installations for front and rear shelves using tab mounts are shown
in Figures 7–4 and 7–5. Using the illustrations as a guide, install the shelf
brackets as follows:
WARNING
Cabinet rail edges can be sharp and can slice or abrade skin or cable
insulation.

Note
Two small ESD grounding posts are provided with the cabinet. One is
located on a front vertical cabinet rail, and one on a rear vertical cabinet
rail. Should an ESD grounding post interfere with the installation of a
shelf, move the post out of the way to any free hole on the cabinet.

1. Switch off the cabinet power as described in Section 7.1.
2. Determine the correct shelf mounting locations and corresponding cabinet
rail mounting holes for the shelf bracket. Refer to Chapter 5 or 6 for this
information.
3. Position the shelf bracket at the correct mounting holes just behind the outer
flange of the vertical cabinet rail, as shown.
4. Align the bracket mounting studs and mounting tabs with the appropriate
holes in the front vertical cabinet rail and seat the studs and tabs in the
holes.
5. Fasten the bracket to the cabinet rail by installing KEP nuts on the uppermost and lower-most mounting studs, as shown. Do not install KEP nuts on
the two middle studs at this time.
6. Using Table 7–5, determine the correct stop bracket position for the shelf type
being installed.
Table 7–5 Horizontal Shelf Stop Bracket Positions
StorageWorks
Shelf Type

Front Shelf
Stop Bracket Position

Rear Shelf
Stop Bracket Position

BA350–Sx

BA350–Mx

5 (Stop bracket not used)

BA350–Ex

7. Insert the tab on the stop bracket into the slot at the correct stop position
on the shelf bracket. Fasten the stop bracket to the shelf bracket, as shown.
For front-mounted BA350–Mx shelves, the inner lip on the mounting bracket
serves as the stop bracket.
8. Repeat steps 2 through 7 to mount the companion shelf bracket on the
opposite cabinet rail. To be sure of proper alignment of the brackets, use care
to mount the bracket to the correct rail mounting holes.

Installing StorageWorks Shelves 7–9

9. With the power supply end of the shelf to the left and the blowers facing
the cabinet, slide the shelf into the shelf brackets until it contacts the inner
stop brackets. The shelf should slide smoothly into the brackets. If it binds,
remove it and check the alignment of the shelf brackets. The shelf bracket
mounting nuts might need to be loosened slightly to allow the brackets to
align with the shelf. Retighten the nuts when the shelf brackets are properly
aligned.
10. Using Table 7–6, verify that you have the correct locking bracket part number
for the shelf type and position (front or rear) being installed.
11. Once the shelf is positioned within the shelf brackets, install both shelf
locking brackets with KEP nuts on the middle mounting studs, as shown.
Push each locking bracket against the shelf to seat it before tightening the
nuts.
Table 7–6 Horizontal Shelf Locking Bracket Part Numbers
StorageWorks
Shelf Type

Front Shelf
Locking Bracket Part No.

Rear Shelf
Locking Bracket Part
No.

BA350–Sx

74–46441–01

74–46439–01

BA350–Mx

74–46441–02

74–46439–02

BA350–Ex

74–46441–03

74–46439–01

7–10 Installing StorageWorks Shelves

Figure 7–4 Front Shelf Bracket Installation

STOP
POSITION
#4
STOP
POSITION
#3
STOP
POSITION
#2
FRONT
VERTICAL
CABINET
RAIL

MOUNTING
TAB
(4 PLACES)

STOP
POSITION
#1

STOP
POSITION
#5

FRONT SHELF
LOCKING
BRACKET

STOP
BRACKET

SCREW, THRL,
10-32 TRS
.500 XRCS

SHELF MOUNTING
BRACKET (LEFT
FRONT POSITION)

NUT,
M5 KEP
(4 PLACES)

MOUNTING
STUD
(4 PLACES)

INNER
FLANGE
CXO-4074A-MC

Installing StorageWorks Shelves 7–11

Figure 7–5 Rear Shelf Bracket Installation

STOP
POSITION
#4
STOP
POSITION
#3
STOP
POSITION
#2
REAR
VERTICAL
CABINET
RAIL

MOUNTING
TAB
(4 PLACES)

STOP
POSITION
#1

STOP
POSITION
#5

REAR SHELF
LOCKING
BRACKET

STOP
BRACKET

SCREW, THRL,
10-32 TRS
.500 XRCS

SHELF MOUNTING
BRACKET (LEFT
REAR POSITION)
MOUNTING
STUD
(4 PLACES)
NUT,
M5 KEP
(4 PLACES)

7–12 Installing StorageWorks Shelves

INNER
FLANGE

CXO-4073A-MC

7.7 Air Separation Panel Installation
Once the cabinet’s shelves are configured, the air separation panels must be
installed. The front and rear air separation panels are identical parts, but they
are positioned in different ways depending upon where in the cabinet they are
installed. Install the air separation panels in both the front and rear of the
cabinet as described in Sections 7.7.1 and 7.7.2.

7.7.1 Installing the Front Air Separation Panel
The front air separation panel is required only if there is an open storage position
above the upper-most shelf in the front of the cabinet. Install the front air
separation panel as follows:
1. Install four U-nuts on the air separation panel, as shown in Figure 7–6.
2. Position the air separation panel just behind the front vertical cabinet rails.
Position the panel as closely as possible to the top of the upper-most front
cabinet shelf.
3. Fasten the air separation panel to the front vertical cabinet rails with four
screws.
Figure 7–6 Front Air Separation Panel Installation
LEFT FRONT
VERTICAL
CABINET RAIL

U-NUT, 10-32
(4 PLACES)

AIR
SEPARATION
PANEL

RIGHT FRONT
VERTICAL
CABINET RAIL

SCREW, SEMS
10-32 x .625
(4 PLACES)

UPPER-MOST
SHELF
CXO-3930A-MC

Installing StorageWorks Shelves 7–13

7.7.2 Installing the Rear Air Separation Panel
The rear air separation panel is installed just above the upper-most shelf in the
rear of the cabinet. If cable distribution unit (CDU) A is installed in this position,
the air separation panel is installed against the front panel of CDU A.
7.7.2.1 Rear Air Separation Panel Installation—Opening Above the Upper-Most Shelf
If the position just above the upper-most shelf is open, install the rear air
separation panel as follows:
1. Install four U-nuts on the vertical cabinet rails, as shown in Figure 7–7.
Figure 7–7 Rear Air Separation Panel Installation—Empty Shelf Position Above Upper-Most
Shelf

REAR VERTICAL
CABINET RAIL

AIR
SEPARATION
PANEL

U-NUT, 10-32
(4 PLACES)

10-32 x .500
SCREW
(4 PLACES)

UPPER-MOST
SHELF
CXO-3935A-MC

2. Position the air separation panel against the four U-nuts.
3. Fasten the air separation panel to the rear vertical cabinet rails with four
screws.
7.7.2.2 Rear Air Separation Panel Installation—CDU A Above the Upper-Most Shelf
If CDU A is installed above the upper-most rear shelf, the rear air separation
panel is installed against its front panel. If a redundant CDU is installed above
CDU A, the air separation panel is still installed against the front panel of CDU
A. Install the rear air separation panel as follows:
1. Support CDU A in position against the rear vertical cabinet rails while
removing its mounting screws, as shown in Figure 7–8.

7–14 Installing StorageWorks Shelves

Figure 7–8 Rear Air Separation Panel Installation—CDU A Installed Above Upper-Most Shelf

REAR VERTICAL
CABINET RAIL

CDU A
AIR
SEPARATION
PANEL
CDU MOUNTING
SCREW
(4 PLACES)

UPPER-MOST
SHELF
CXO-3929A-MC

2. Position the air separation panel against the front panel of CDU A.
3. Fasten the air separation panel, along with CDU A, to the rear vertical
cabinet rails with four screws.
4. Route the CDU’s power cord up and over the air separation panel to the left.

7.8 Installing Exterior Cabinet Panels
Once the cabinet rack space is configured as desired, the exterior cabinet panels
can be installed. Refer to Figure 7–1 and reinstall the exterior cabinet panels as
follows:
1. Position a side panel against the cabinet with the lip above the upper hanger
clips just over the upper edge of the side of the cabinet.
2. Make sure that the entire surface of the side panel rests firmly against the
side of the cabinet.
3. Allow the panel to slide downward, catching the two hanger clips as it moves.
4. Install the side panel bolts into the side panel through the holes in the top
side rails of the cabinet.
5. Repeat steps 1 through 4 to install the other side panel.

Installing StorageWorks Shelves 7–15

6. Locate the four inset nylon snap fasteners on the top cabinet rails.
WARNING
The top cover is heavy and awkward to lift. Installing it requires two
people. Failure to use sufficient personnel can result in personnel injury
or equipment damage.

7. Position the top cover over the cabinet. Position the cover as shown in
Figure 7–1 such that the front end of the panel with the shorter overhang is
oriented toward the rear of the cabinet.
8. Align the pins on the underside of the top cover with the inset nylon fasteners
on the top cabinet rails.
WARNING
Be careful not to catch your fingers between the cabinet and the top panel
when snapping the panel to the cabinet.

9. Lower the cover onto the cabinet and press it down, making sure the pins
snap into the top panel fasteners.
10. If the cabinet was moved to access the side panels, place it in its original
position.

7–16 Installing StorageWorks Shelves

8
Installing TZ8x7-Series Tape Drives
This chapter describes the mounting and power cabling of TZ8x7-series tape
drives in SW500-series cabinets.

8.1 General Installation Considerations
The TZ8x7-series tape drive is mounted in the SW500 cabinet with one chassis
rail, as shown in Figure 8–1. The chassis rail is attached to the cabinet’s internal
vertical rails, and it supports the TZ8x7-series tape drive from one side. Grooves
machined into the side of the tape drive enclosure mate with flanges along the
sides of the chassis rail, allowing the tape drive to be slid onto the chassis rail
from the front of the cabinet. Once installed, the tape drive enclosure extends
from the front to the rear of the SW500 cabinet.
Two TZ8x7-series tape drives can be mounted side-by-side at a given vertical
position in the cabinet. The chassis rail hardware is the same for both the
left and right mounting positions. Only the orientation of the hardware differs
between the two mounting positions. There is no mechanical connection between
two tape drives mounted side-by-side in the cabinet.
In situations where only one TZ8x7-series tape drive is being installed at a given
vertical position in the cabinet, the tape drive must be installed in the right
mounting position. This will ensure that the front panel of the tape drive mates
with the correct opening in the tape bezel in the cabinet door. A filler panel in
the tape bezel covers the left mounting position in this case.
WARNING
While working in the cabinet interior, ac power must be removed from
cabinet components. Failure to do so may result in personal injury as a
result of electric shock.

Prior to performing any of the procedures in this chapter, remove ac power from
cabinet components. If the cabinet is installed and operating, spin down all disk
drives and halt all tape drives in the cabinet. Switch the circuit breaker on the
front panel of the cabinet’s CDU(s) to the
(OFF) position.

Installing TZ8x7-Series Tape Drives 8–1

Figure 8–1 TZ8x7-Series Tape Drive Installation

CABINET
CHASSIS
RAIL
TAPE
BEZEL

TZ8x7-SERIES
TAPE DRIVE
(LEFT POSITION)

TZ8x7-SERIES
TAPE DRIVE
(RIGHT POSITION)

CXO-3926A-MC

8.2 Accessing the Cabinet Rack Space
TZ8x7-series tape drives can normally be installed without removing cabinet side
panels. To route the cabling in configurations where access to the interior of the
cabinet is limited, however, cabinet side panels may need to be removed. Sections
and 8.8 present procedures for removing and replacing exterior cabinet panels.
The front and rear cabinet doors are held closed by door locks mounted on each
door. The locks are released by turning counterclockwise with a 5/32-inch hex
wrench.
Removing the Cabinet Side Panels
As shown in Figure 8–2, there are three side panel hanger clips on each side
of the cabinet. A matching set of hanger clips are attached to each side panel.
Remove the side panels as follows:

8–2 Installing TZ8x7-Series Tape Drives

Figure 8–2 Cabinet Side Panel Removal and Installation

FASTENER
PIN
(4 PLACES)
NYLON SNAP
FASTENER
(4 PLACES)

TOP COVER

M6x40mm BOLT
(4 PLACES)

LIP

SIDE PANEL
HANGER
CLIPS

UPPER
SIDE PANEL
HANGER
CLIP

LOWER
SIDE PANEL
HANGER
CLIP

CABINET
FRONT
SIDE PANEL

NOTE: FRONT AND REAR DOORS NOT SHOWN FOR CLARITY
CXO-3899A-MC

Installing TZ8x7-Series Tape Drives 8–3

8.3 Chassis Rail Installation
As shown in Figure 8–3, one end of the tape drive chassis rail is extendible using
a sliding rail bracket, to allow the length of the chassis rail to be adjusted to fit
the cabinet. Two round standoffs are used to locate the chassis rail along the
vertical cabinet rails. The round standoffs are inserted into front and rear chassis
rail locating holes to position the chassis rail while it is fastened to the cabinet.
Chassis rail component assembly and installation procedures for both left and
right tape drive mounting positions are presented in Sections 8.3.1, 8.3.2, and
8.3.3.
Note
Two small ESD grounding posts are provided with the cabinet. One is
located on a front vertical cabinet rail, and one on a rear rail. Should an
ESD grounding post interfere with the installation of the chassis rail,
move the post out of the way to any free hole on the cabinet.

8.3.1 Chassis Rail Assembly
Before the chassis rail components can be mounted in the cabinet, they must be
assembled. Assemble the chassis rail components as follows (see Figure 8–3):
1. Position the rail bracket against the chassis rail, as shown in the illustration.
2. Fasten the rail bracket to the chassis rail with the unbeveled nut bar and four
screws, as shown. Leave the screws loose enough to allow the rail bracket to
be moved along the chassis rail.
3. Install a U-nut in the groove near the end of each of the beveled nut bars.
The flat side of the U-nuts must be installed on the beveled side of the nut
bar.

8–4 Installing TZ8x7-Series Tape Drives

Figure 8–3 Chassis Rail Assembly

ROUND
STANDOFF

U-NUT, 10-32
(2 PLACES)

NUT BAR,
UNBEVELED

CHASSIS
RAIL
SCREW, 10-32
FH
(4 PLACES)

ROUND
STANDOFF
NUT BAR,
BEVELED
(2 PLACES)

RAIL
BRACKET
CXO-3934A-MC

4. Install the beveled nut bars on the chassis rail and rail bracket, using the
round standoffs to hold them in place. The beveled side of the nut bars must
face the flanges on the chassis rail and rail bracket.
The chassis rail assembly is now ready to be installed in the cabinet.

8.3.2 Right Position Chassis Rail Assembly Installation
Install the chassis rail assembly in the right position within the cabinet as follows
(see Figure 8–4):
WARNING
Cabinet rail edges may be sharp and can slice or abrade skin or cable
insulation.

1. Turn the cabinet power off as described in Section 8.1.
2. Determine the correct tape drive mounting locations and corresponding
cabinet rail mounting holes for the chassis rail assembly. Refer to Chapter 5
or 6 for this information. The tape mounting hole specified for each position
is the chassis rail locating hole shown in Figure 8–4.

Installing TZ8x7-Series Tape Drives 8–5

Figure 8–4 Right Position Chassis Rail Assembly Installation

REAR VERTICAL
CABINET RAIL
REAR
CHASSIS
RAIL
LOCATING
HOLE
INNER
FLANGE

INNER
FLANGE

ROUND
STANDOFF
(2 PLACES)

FRONT VERTICAL
CABINET RAIL
OUTER
FLANGE

U-NUT, 10-32
(4 PLACES)

U-NUT, 10-32
(2 PLACES)

FRONT
CHASSIS
RAIL
LOCATING
HOLE
UP

SCREW, 10-32
SEMS
(4 PLACES)

CHASSIS
RAIL ASSEMBLY
RAIL
BRACKET

WASHER, LOCK
10-32, INTERNAL
(6 PLACES)
SCREW, 10-32
HEX CAP
(6 PLACES)
CXO-3924A-MC

WARNING
Use care in supporting the chassis rail assembly. It is heavy and awkward
to position within the cabinet. If possible, use two people to support and
position the chassis rail assembly. The chassis rail assembly may cause
injury and equipment damage if dropped during installation.

8–6 Installing TZ8x7-Series Tape Drives

Note
To ensure proper alignment of the chassis rail assembly, use care to
position the round standoffs in the correct front and rear chassis rail
locating holes.

3. From the front of the cabinet, position the chassis rail assembly at the correct
mounting holes, as shown. Ensure that the rail bracket is positioned toward
the front of the cabinet, and that the arrow on the rail bracket points up.
4. Insert the rear round standoff into the rear chassis rail locating hole.
5. Support the chassis rail against the rear vertical cabinet rail and maintain
the rear round standoff in its locating hole. Extend the rail bracket to insert
the front round standoff into its correct front chassis rail locating hole.
6. Using the shelf bracket as a template, mark the four U-nut mounting holes
on the inner flanges of both the front and rear vertical cabinet rails. Make
sure to use the correct set of holes in the chassis rail.
7. Temporarily remove the chassis rail assembly and install four U-nuts along
the inner flanges of the front and rear vertical cabinet rails at the holes
marked in step 6.
8. Reposition the chassis rail assembly as directed in steps 3 through 5.
9. Fasten the chassis rail to the inner flanges of the front and rear vertical
cabinet rails with four screws, as shown.
10. Fasten the rail bracket to the front vertical cabinet rail with its beveled nut
bar and three screws, as shown.
11. Fasten the chassis rail to the rear vertical cabinet rail with its beveled nut
bar and three screws, as shown.
12. Tighten the screws fastening the rail bracket to the chassis rail.
13. Install two U-nuts along the outer flange of the front vertical cabinet rail.
Install one U-nut at the hole just above the front chassis rail locating hole
and the other at the eighth hole below the locating hole.

8.3.3 Left Position Chassis Rail Assembly Installation
Note
Install the chassis rail assembly in the left mounting position only if
a tape drive is also installed in the right position. The front cabinet
door tape bezel openings are designed to allow a single tape drive to be
installed only in the right position.

Install the chassis rail assembly in the left position within the cabinet as follows
(see Figure 8–5):
WARNING
Cabinet rail edges may be sharp and can slice or abrade skin or cable
insulation.

Installing TZ8x7-Series Tape Drives 8–7

REAR VERTICAL
CABINET RAIL

INNER
FLANGE

FRONT VERTICAL
CABINET RAIL

OUTER
FLANGE

INNER
FLANGE

U-NUT, 10-32
(2 PLACES)

REAR
CHASSIS
RAIL
LOCATING
HOLE

ROUND
STANDOFF
(2 PLACES)

U-NUT, 10-32
(4 PLACES)

FRONT
CHASSIS
RAIL
LOCATING
HOLE

RAIL
BRACKET
WASHER, LOCK
10-32, INTERNAL
(6 PLACES)

CHASSIS
RAIL ASSEMBLY

SCREW, 10-32
HEX CAP
(6 PLACES)

SCREW, 10-32
SEMS
(4 PLACES)

CXO-3923A-MC

WARNING
Use care in supporting the chassis rail assembly. It is heavy and awkward
to position within the cabinet. If possible, use two persons to support and
position the chassis rail assembly. The chassis rail assembly may cause
injury and equipment damage if dropped during installation.

8–8 Installing TZ8x7-Series Tape Drives

Note
To ensure proper alignment of the chassis rail assembly, use care to
position the round standoffs in the correct front and rear chassis rail
locating holes.

3. From the rear of the cabinet, position the chassis rail assembly at the correct
mounting holes, as shown. Ensure that the rail bracket is positioned toward
the rear of the cabinet, and that the arrow on the rail bracket points up.
4. Insert the front round standoff into the front chassis rail locating hole.
5. Support the chassis rail assembly against the front vertical cabinet rail and
maintain the front round standoff in its locating hole. Extend the rail bracket
to insert the rear round standoff into its correct rear chassis rail locating hole.
6. Using the chassis rail as a template, mark the four U-nut mounting holes on
the inner flanges of both the front and rear vertical cabinet rails. Make sure
to use the correct set of holes in the chassis rail.
7. Temporarily remove the chassis rail assembly and install four U-nuts along
the inner flanges of the front and rear vertical cabinet rails at the holes
marked in step 6.
8. Reposition the chassis rail assembly as directed in steps 3 through 5.
9. Fasten the chassis rail assembly to the inner flanges of the front and rear
vertical cabinet rails with four screws, as shown.
10. Fasten the rail bracket to the rear vertical cabinet rail with its beveled nut
bar and three screws, as shown.
11. Fasten the chassis rail to the front vertical cabinet rail with its beveled nut
bar and three screws, as shown.
12. Tighten the screws fastening the rail bracket to the chassis rail.
13. Install two U-nuts along the outer flange of the front vertical cabinet rail.
Install one U-nut at the hole just above the front chassis rail locating hole
and the other at the eighth hole below the locating hole.

Installing TZ8x7-Series Tape Drives 8–9

8.4 Mounting the TZ8x7-Series Tape Drive Enclosure
Once the chassis rail is installed in the cabinet, the tape drive enclosure can be
mounted on it. Mount the TZ8x7-series tape drive to the chassis rail as follows:
Note
The lock down brackets are mirror images of each other, and they are
identified as the -01 and -02 versions. They must be installed with the
orientation shown in the illustration.

1. Install the the two lock down brackets on the side of the tape drive enclosure
near the front end, as shown in either Figure 8–6 or 8–7. Figure 8–6 shows
the installation for the right mounting position, and Figure 8–7 shows the
installation for the left mounting position.

8–10 Installing TZ8x7-Series Tape Drives

Figure 8–6 Right Position Tape Drive Mounting

SCREW, 10-32
HEX CAP
(4 PLACES)

WASHER, 10-32
LOCK
(2 PLACES)
WASHER, 10-32
FLAT
(2 PLACES)

FRONT VERTICAL
CHASSIS RAIL
LOCK DOWN
BRACKET
(-02)

U-NUT, 10-32
(2 PLACES)
(REF)

TAPE DRIVE
ENCLOSURE
(FRONT)

LOCK DOWN
BRACKET
(-01)
WASHER, 10-32
LOCK
(4 PLACES)

SCREW, 10-32
HEX CAP
(4 PLACES)

NOTE: TAPE DRIVE INTERNAL COMPONENTS NOT SHOWN FOR CLARITY.
CXO-3918A-MC

Installing TZ8x7-Series Tape Drives 8–11

Figure 8–7 Left Position Tape Drive Mounting

FRONT VERTICAL
CABINET RAIL

LOCK DOWN
BRACKET
(-01)

WASHER, 10-32
FLAT
WASHER, 10-32
(2 PLACES)
LOCK
(2 PLACES)

SCREW, 10-32
HEX CAP
(2 PLACES)

U-NUT, 10-32
(2 PLACES)
(REF)

TAPE DRIVE
ENCLOSURE
(FRONT)

LOCK DOWN
BRACKET
(-02)
SCREW, 10-32
HEX CAP
(4 PLACES)

WASHER, 10-32
LOCK
(4 PLACES)

NOTE: TAPE DRIVE INTERNAL COMPONENTS NOT SHOWN FOR CLARITY.
CXO-3919A-MC

WARNING
Use two persons to lift the TZ8x7-series tape drive. The unit is heavy
and awkward to lift. Failure to use two persons to lift the tape drive may
result in injury or damage to equipment.

2. From the front of the cabinet and using two persons, position the tape drive
such that the machined grooves in the side of the tape drive enclosure mate
with the upper and lower edges of the chassis rail.
CAUTION
Use care when sliding the tape drive into the cabinet. Do not allow the
tape drive enclosure to pull or pinch cables that may be routed through
8–12 Installing TZ8x7-Series Tape Drives

the cabinet interior. Failure to use care when mounting the tape drive
may result in equipment damage.

3. Slide the tape drive onto the chassis rail until the lockdown brackets contact
the U-nuts on the front vertical cabinet rail.
4. Fasten the lock down brackets to the front vertical chassis rail with two hex
cap screws, as shown in Figure 8–6 or 8–7.
Note
Preconfigured cabinets containing TZ8x7 tape drives are sent from the
factory with red shipping brackets installed on the rear of the tape drives
for stability. The shipping brackets may be left in place or removed at
the user’s discretion. The brackets are not needed, nor are they supplied,
with tape drives ordered to be installed on site.

8.5 Supplying AC Power
AC power for the TZ8x7-series tape drive is obtained from CDU A. One of the
cabinet’s preinstalled shelf power cords is used to supply power to the tape drive.
To use one of the preinstalled cabinet power cords, simply locate an unused
cord next to the tape drive’s rear-panel power receptacle and plug it into the
receptacle. Switch the power switch on the rear panel of the tape drive to the
(ON) position to allow the CDU to control the unit’s power.

8.6 SCSI–2 Signal Cabling
Refer to the Storage Solutions TZ8x7-Series Tape Drive SCSI Bus Configuration
and Installation Guide for details on the selection of SCSI–2 cables and their
connection to the TZ8x7-series tape drive.

8.7 Installing the Cabinet Door Tape Bezel Kit
To allow operator access to the TZ8x7 tape drive, the front cabinet door tape
bezel kit must be installed. To install the tape bezel kit, see the Instructions for
Installation of the Tape Bezel Kit on SF400 Series Cabinets provided with the kit.
The SF400 installation instructions also apply to SW500-series cabinets.
If the tape bezel kit is already installed, you need only remove its filler panel to
accommodate a tape drive in the left mounting position.

8.8 Reinstalling Exterior Cabinet Panels
Once the cabinet rack space is configured as desired, the exterior cabinet panels
may be reinstalled. Refer to Figure 8–2 and reinstall the exterior cabinet panels
as follows:
1. Position a side panel against the cabinet with the lip above the upper hanger
clips just over the upper edge of the side of the cabinet.

Installing TZ8x7-Series Tape Drives 8–13

Figure 8–8 TZ8x7-Series Tape Drive Rear Panel

SCSI-2
CONNECTORS

AC POWER
SWITCH

AC RECEPTACLE

CXO-3932A-MC

2. Ensure that the entire surface of the side panel rests firmly against the side
of the cabinet.
3. Allow the panel to slide downward, catching the three hanger clips as it
moves.
4. Install the side panel bolts into the side panel through the holes in the top
side rails of the cabinet.
5. Repeat steps 1 through 4 to install the other side panel.
6. Locate the four inset nylon snap fasteners on the top cabinet rails.
WARNING
The top cover is heavy and awkward to lift. Installing it requires two
people. Failure to use sufficient personnel may result in injury or
equipment damage.

8–14 Installing TZ8x7-Series Tape Drives

7. Position the top cover over the cabinet. Position the cover as shown in
Figure 8–2 such that the end of the panel with the shorter overhang is
oriented toward the front of the cabinet.
8. Align the pins on the underside of the top cover with the inset nylon fasteners
on the top cabinet rails.
WARNING
Be careful not to catch your fingers between the cabinet and the top panel
when snapping the panel to the cabinet.

9. Lower the cover onto the cabinet and press it down, ensuring that the pins
snap into the top panel fasteners.
10. If the cabinet was moved to access the side panels, place it in its original
position.

Installing TZ8x7-Series Tape Drives 8–15

9
Power Configuration
This chapter discusses the configuration of primary power within SW500-series
cabinets. Descriptions of the cabinet’s power configuration options can be found
in Section 2.3.

9.1 General Considerations
WARNING
While working in the cabinet interior, ac power must be removed from the
cabinet components. Failure to do so may result in personal injury as a
result of electric shock.

Prior to performing any of the procedures in this chapter, remove ac power from
the cabinet components. If the cabinet is installed and operating, spin down all
disk drives and halt all tape drives in the cabinet. Switch the circuit breaker on
(OFF) position.
the front panel of the cabinet’s CDUs to the

9.2 Cable Distribution Units
The 887–E CDU is used with SW500-series cabinets and is designed for both
230 volt, 50 Hz and 120 volt, 60 Hz applications. The unit provides ac power
to the cabinet’s components via 12 Molex output connectors on its rear panel.
Two International Electrotechnical Commission (IEC) output connectors are also
provided for utility purposes.
WARNING
If the leakage current of the cabinet is above 3.5 mA after installation,
Digital recommends that power cables with industrial type B, IEC 950
connectors be installed. Failure to reduce the leakage current can result
in equipment performance degradation and personal injury due to electric
shock.

Table 9–1 lists the power cables used with the 887–E CDU.

Power Configuration 9–1

Table 9–1 CDU Power Cable Variations
Cable Part No.†

Country Usage

Comments‡

17–01255–01

Europe, Japan

IEC 309 plug and
cordage (220/240 volt)

17–00083–57

United States

NEMA 5–20P twist-lock
plug (120 volt)

†The SW500–AD cabinet version for Europe and Japan is shipped with the either the 17–01255–01 or
17–00083–57 power cable, depending upon customer requirements. The SW500–AC cabinet version
for the United States is shipped with only the 17–00083–57 power cable. If a different cable is
required, the customer must order it prior to installation.
‡All power cables are supplied with a female plug compatible with the IEC input connector on the
front panel of the CDU.

9.3 Utility Power Cord
Each SW500 cabinet is furnished with one additional power cord for the purpose
of powering monitors, printers, or other devices. The power cord is connected to
the rear panel of the CDU and may be found coiled up in the base of the cabinet.

9.4 Single CDU Configurations
Using one CDU, cabinet power can be configured with both single and dual power
supplies in each shelf. Refer to Sections 2.3.1 and 2.3.2 for further information on
these configurations.

9.4.1 Single Cabinet Power Configuration
Unless options are specified, SW500-series cabinets are shipped with a single
CDU and single-shelf power supplies. For ease of upgrade, the cabinet is supplied
with 10 black and 10 gray preinstalled ac power cords. One black and one gray
power cord is routed to each usable front and rear shelf position. These cords are
used to supply ac power to shelves as they are added to the cabinet. The black
cord at each newly added shelf ’s mounting position needs only to be plugged into
the shelf ’s power supply to complete the shelf ’s installation.

9.4.2 Dual-Shelf Power Configuration
In the dual-shelf power configuration, a second ac power supply is necessary for
each shelf (refer to Figure 2–5). Configure each shelf for dual ac power supplies
as follows:
1. Power the cabinet down as described in Section 9.1.
2. Plug in a second ac power supply (B) next to the existing ac power supply (A)
in each shelf.
3. Plug the gray ac power cord at each shelf position into the connector on the
newly added ac power supply.
4. Using the procedures appropriate to your system, turn on the cabinet and
initialize it.

9–2 Power Configuration

9.5 Dual-Cabinet Power Configuration
The dual-cabinet power configuration requires two CDUs for power distribution.
The second CDU (CDU B) is installed immediately above CDU A in the rear of
the cabinet. Install the dual power option kit as follows:
1. Check the contents of the dual power option kit against the parts list shown
in Table 9–2 to verify that all the parts are present.
Table 9–2 SW500 Cabinet Dual Power Option Kit Parts List
Kit option numbers
SW5xP–AC (120V, 60 Hz), SW5xP–AD (230V, 50 Hz)

Quantity

Digital Part Number

Description

–AC

–AD

EK–SW5CU–IG

CDU and dual power option installation guide

90–00063–39

Screw, 10–32 Phillips, .500 inch

90–07786–00

U-nut, 10–32

30–32959–05

Cable distribution unit, 120/230V, 60/50 Hz

17–00083–57

Power cable, NEMA 5–20 twist-lock plug

–

17–01255–01

Power cable, IEC 309 plug

–

90–07085–00

Cable clamp, .500 inch

–

90–07089–00

Cable clamp, .750 inch

36–38274–01

Label, caution and cable ID

2. See Figure 9–1 to familiarize yourself with the location and identification of
each of the CDUs to be configured for the dual power option.
3. Spin down all disk drives and halt all tape drives in the cabinet.
4. Open the rear cabinet door to expose CDU A.
5. Switch the circuit breaker on the front panel of CDU A to the
position.

(OFF)

6. Disconnect CDU A’s primary power cable from the power source.

Power Configuration 9–3

Figure 9–1 CDU Installation
REAR VERTICAL
CABINET RAIL

U-NUT, 10-32
(4 PLACES)

SCREW,
10-32 x .5 THRL
(4 PLACES)
CDU A
CDU A PRIMARY
POWER CABLE

CDU B

CDU B PRIMARY
POWER CABLE

CDU B
LABEL
(2 PLACES)
CABINET REAR
BASE PAN

CDU A
LABEL
(2 PLACES)

CDU A PRIMARY
POWER CABLE
CXO-3904A-MC

9–4 Power Configuration

Note
In some cases, it may be desirable to allow the host computer system
to operate while the dual power option kit is being installed. In this
instance, the cabinet may be isolated from power by disconnecting the
host computer interface cables. Refer to the documentation for your host
computer configuration for the steps necessary to disconnect the cables.

7. Isolate the cabinet electrically by powering down the host computer.
8. To install CDU B, you must have free access to the interior area of the
cabinet. If necessary, gain access to the cabinet interior by separating the
cabinet from adjacent ones and removing its side panels. Refer to Chapter 7
for details on exterior cabinet panels.
WARNING
Cabinet rail edges may be sharp and can slice or abrade skin and cable
insulation.

9. Remove CDU B from its packing material.
10. Locate the 10 preinstalled gray power cords coiled in the interior of the
cabinet. Bring the free end of each of the cords to the opening above CDU A.
11. Position CDU B at the opening above CDU A, as shown in Figure 9–1.
12. Plug the CDU plug of each gray cord into the rear panel of CDU B. The cords
may be plugged in in any order.
13. Slide CDU B into position against the vertical cabinet rails.
14. Using the hardware provided in the kit, mount CDU B to the cabinet chassis
rails, as shown in Figure 9–1.
WARNING
To prevent injury from electric shock, it is important that safety labels be
properly applied. Confusion can result from the fact that the cabinet uses
two primary power sources with the dual power option. Install the cable
and cabinet labeling carefully in accordance with the instructions in steps
15 through 25.

15. Cut off one letter ‘‘A’’ from one of the yellow ‘‘A’’ labels in the kit. Remove the
cut label from its backing paper and place it on the front panel of CDU A just
to the left of the power receptacle.
16. Wrap the remainder of the cut ‘‘A’’ label around the primary power cable for
CDU A as close to the CDU (female) end as possible, as shown in Figure 9–1.
17. Remove another of the yellow ‘‘A’’ labels in the kit from its backing paper and
wrap it around the other (male) end of the primary power cable of CDU A, as
shown in Figure 9–1.
18. Cut off one letter ‘‘B’’ from one of the yellow ‘‘B’’ labels in the kit. Remove the
cut label from its backing paper and place it on the front panel of CDU B just
to the left of the power receptacle.

Power Configuration 9–5

19. Locate the primary power cable for CDU B in the kit.
20. Wrap the remainder of the cut ‘‘B’’ label around the primary power cable for
CDU B as close to the CDU (female) end as possible, as shown in Figure 9–1.
21. Remove another of the yellow ‘‘B’’ labels in the kit from its backing paper and
wrap it around the other end of the primary power cable of CDU B, as shown
in Figure 9–1.
22. Install the primary power cable for CDU B into the cabinet, as shown in
Figure 9–1. Follow the same routing and use the same cable ties or clamps as
the existing primary power cable.
23. Plug the CDU B primary power cable into the receptacle on the front panel of
CDU B, as shown in Figure 9–1.
24. Remove one of the two yellow "CAUTION" labels from its backing paper and
place it on the left side of the rear air separation panel.
25. Remove the second yellow "CAUTION" label from its backing paper and place
it on the left side of the front air separation panel.
26. Make sure that the redundant dc power supply required for the dual power
option is installed in each shelf. (The redundant dc power supply is the
right-hand one.)
27. Plug the gray power cord preinstalled next to each shelf position into the
redundant dc power supply in each shelf.
28. If the cabinet’s host computer interface cables were disconnected in step 7,
reconnect the cables.
29. Replace the cabinet side panels and reposition the cabinet next to adjacent
ones as appropriate.
30. Reconnect the primary power cable from CDU A to its source.
31. Connect the primary power cable from CDU B to the auxiliary power source.
32. Switch the circuit breakers on both CDUs to the (ON) position.

33. Close and secure the cabinet doors.
34. Restart all disk and tape drives and check them for proper function.

9–6 Power Configuration

StorageWorks Glossary
ac distribution
The method of distributing ac power in a cabinet.
ac power supply
A power supply designed to produce dc power from an ac input.
adapter
A device that converts the protocol and hardware interface of one bus type
into that of another without changing the functionality of the bus. See signal
converter.
American National Standards Institute
See ANSI.
ANSI
American National Standards Institute. An organization that develops and
publishes electronic and mechanical standards.
array controller
A hardware/software device that facilitates communications between a host and
one or more devices organized in an array. HS-family controllers are examples of
array controllers.
BA350–Mx controller shelf
The StorageWorks controller shelf used for HS-family controller modules, cache
modules, and shelf power units.
BA350–Sx SBB shelf
A StorageWorks shelf used for only power units and SBBs.
bad block
A disk drive data block containing a physical defect.
bad block replacement
See BBR.
battery backup unit
See BBU.
BBR
Bad block replacement. The substitution of defect-free disk blocks for those found
to have defects.

Glossary–1

BBU
Battery backup unit. Extends power availability after the loss of primary ac
power or a power supply to protect against the corruption or loss of data.
block
A stream of data transferred as a unit. (Used interchangeably with the term
sector for disk drives.)
blower
An airflow device mounted in a StorageWorks shelf.
cable distribution unit
See CDU.
carrier
A standard, StorageWorks shelf-compatible, plastic shell into which a device can
be installed. Sometimes called SBB carrier.
CDU
Cable distribution unit. The power entry device for StorageWorks cabinets. The
unit provides the connections necessary to distribute ac power to cabinet shelves
and fans.
channel
The RAID Array 110 subsystem term for a SCSI bus.
CI bus
Computer Interconnect bus. Uses two serial paths, each with a transfer rate of
70 Mb/s (8.75 MB/s).
CLI
Command line interpreter. Operator command line interface for the HS-family
controller firmware.
cold swap
A method of device replacement that requires that power be removed from all
shelves in a cabinet. This method is used when conditions preclude the use of the
warm swap or hot swap methods.
command line interpreter
See CLI.
controller
A hardware/software device that facilitates communications between a host
and one or more devices. A controller translates bus protocols and hardware
interfaces and adds functionality to the host/device communications.
controller shelf
A StorageWorks shelf designed to contain controller and cache memory modules.
DAT
Digital Audio Tape. A format for recording digital data on a cartridge tape.

Glossary–2

data center cabinet
A generic reference to the large cabinets, such as the SW800 series, in which
StorageWorks components can be mounted.
deskside expansion unit
A pedestal enclosure designed to house one or two StorageWorks shelves in a
vertical position.
Diagnostics and Utilities Protocol
See DUP.
digital audio tape
See DAT.
DIGITAL Storage Architecture
See DSA.
DIGITAL Storage System Interconnect
See DSSI.
DILX
Disk inline exerciser. Diagnostic firmware used to test the data transfer
capabilities of disk drives in a way that simulates a high level of user activity.
Disk Inline Exerciser
See DILX.
DSA
DIGITAL Stoage Architecture. A set of specifications and interfaces describing
standards for designing mass storage products. DSA defines the functions
performed by host computers, controllers, and drives. It also specifies how they
interact to accomplish mass storage management.
DSSI
Digital Storage System Interconnect. A Digital-specific data bus with an 8-bit
data transfer rate of 4 to 5 MB/s.
dual cabinet power configuration
A cabinet ac power configuration in which two ac sources and two ac power
supplies are used to provide redundant dc power to each of the cabinet’s SBB
shelves.
dual shelf power configuration
A cabinet ac power configuration in which one ac source and two ac power
supplies are used to provide redundant dc power to each of the cabinet’s SBB
shelves.
dual universal asynchronous receiver transmitter
See DUART.

Glossary–3

dual-redundant configuration
A controller configuration consisting of a primary and backup controller in one
controller shelf . If the primary controller fails, the backup controller assumes
control over the failing controller’s devices.
DUART
Dual Universal Asynchronous Receiver Transmitter. An integrated circuit
containing two serial, asynchronous transceiver circuits.
DUP
Diagnostic and Utility Protocol. Host application software that allows a host
operator terminal to connect to the controller’s command line interpreter. See
also virtual terminal.
ECC
Error correction code. One or more cyclic redundancy check (CRC) words
that allow detection of a mismatch between transmitted and received data
in a communications system, or between stored and retrieved data in a
storage system. The ECC allows for location and correction of an error in the
received/retrieved data. All ECCs have limited correction power.
EDC
Error detection code. One or more checksum words that allow detection of a
mismatch between transmitted and received data in a communications system,
or between stored and retrieved data in a storage system. The EDC has no data
correction capability.
electromagnetic interference
See EMI.
electrostatic discharge
See ESD.
EMI
Electromagnetic interference. The impairment of a signal by an electromagnetic
disturbance.
error correction code
See ECC.
error detection code
See EDC.
ESD
Electrostatic discharge. The discharge of a potentially harmful static electric
voltage as a result of improper grounding.
failover
Failover is the process that takes place when one controller in a dual-redundant
configuration fails, and the other controller takes over the direction of the storage
subsystem. The other controller continues to direct the storage subsystem until
the failed controller becomes operational or is replaced.

Glossary–4

fan
An airflow device mounted in a StorageWorks cabinet.
fast, differential SCSI
See FD SCSI.
fast, wide, differential SCSI
See FWD SCSI.
FD SCSI
Fast, differential SCSI. The differential SCSI bus with an 8-bit data transfer rate
of 10 MB/s.
See also FWD SCSI and SCSI.
field replaceable unit
See FRU.
filler panel
A sheet metal or plastic panel used to cover unused mounting areas in
StorageWorks cabinets and shelves.
FRU
field replaceable unit. A hardware component that can be replaced in the field.
full-height device
A single device that occupies an entire 5.25 inch SBB carrier. StorageWorks
full-height devices have an order number suffix of ‘‘–VA.’’
FWD SCSI
Fast, wide, differential SCSI. The differential SCSI bus with a 16-bit data
transfer rate of up to 20 MB/s.
See also FD SCSI and SCSI.
half-height device
A device that occupies half of a 5.25 inch SBB carrier. Two half-height devices
can be mounted in a 5.25 inch SBB carrier. The first half-height device is
normally mounted in the lower part of the carrier. The second device is normally
mounted in the upper part of the carrier.
HBVS
Host-Based Volume Shadowing. Also known as Phase 2 Volume Shadowing.
Hierarchical Storage Controller
See HSC.
Hierarchical Storage Operating Firmware
See HSOF.
HIS
Host Interconnect Services. The firmware that communicates with the host in
HS-family controllers.

Glossary–5

host
The primary or controlling computer to which a storage subsystem is attached.
Host Interconnect Services
See HIS.
Host-Based Volume Shadowing
See HBVS.
hot swap
A method of device replacement whereby the complete system remains on line
and active during device removal and reinstallation. The device being removed or
reinstalled is the only device that cannot perform operations during this process.
HSC
Hierarchical Storage Controller. An intelligent mass storage server used on the
CI bus. Capable of supporting a total of eight disk and/or tape data channels,
the HSC is part of the System Interconnect Architecture and Digital Storage
Architecture. By performing as an I/O manager, the HSC can be classified as an
I/O server, removing the burden of I/O management from the CPU.
HSOF
Hierarchical Storage Operating Firmware. HS-family controller firmware is
contained on a removable ROM card.
KILL line
The controller-to-controller disable signal used in a dual-redundant configuration.
least recently used
See LRU.
logical units
A group of devices addressable as a virtual unit.
LRU
Least recently used. The block replacement algorithm for the read cache.
maintenance terminal
The operator terminal used to identify an HS-family controller, to enable its
host paths, to define its subsystem configuration, and to check its status. The
HS-family maintenance terminal interface is designed to accept any terminal
conforming to EIA–423. The maintenance terminal is only required to configure a
storage subsystem and is not required for normal operations.
nonredundant
A configuration in which there is no backup hardware in place for the hardware
that is present.
nonvolatile
See NV.

Glossary–6

NV
Nonvolatile. A term used to describe memory, the contents of which survive loss
of power.
OCP
Operator control panel. The control/indicator panel associated with a device. The
OCP is usually mounted on the device and is accessible to the operator.
operator control panel
See OCP.
port
The hardware and software used to connect a host controller to a communication
bus, such as a CI, SCSI, or SDI bus.
qualified device
A device that has been fully tested in all appropriate StorageWorks hardware
and software configurations, and is in complete compliance with Digital and
country-specific standards,for example, FCC and TÜV.
quiesce
To make a bus inactive or dormant. The operator must quiesce SCSI bus
operations, for example, during a device warm swap.
radio frequency interference
See RFI.
RAID
Redundant array of independent disks. A set of storage techniques devised to
increase the performance and availability of a storage subsystem.
read cache
A block of high-speed memory used by a controller to buffer data being read from
storage devices by a host. A read cache increases the controller’s effective device
access speed by satisfying host read requests from its local cache memory when
possible, instead of from external storage devices. The controller maintains in the
cache copies of data recently requested by the host, and may fetch blocks of data
ahead in anticipation that the controller will access the next sequential blocks. In
a normal read cache, host write requests are handled as usual, without involving
the caching mechanism. See also write through cache.
Redundant Array of Independent Disks
See RAID.
RFI
Radio frequency interference. The impairment of a signal by an unwanted radio
signal or radio disturbance.
SBB
StorageWorks building block. A device housed in a standard StorageWorks
SBB carrier. An SBB has a standard physical and electrical interface that is
compatible with those of StorageWorks shelves and enclosures.

Glossary–7

SBB shelf
StorageWorks building block shelf. A StorageWorks shelf, such as the BA350–Sx,
designed to house plug-in SBB modules.
SCS
System Communication Services. A delivery protocol for packets of information
(commands or data) to or from the host.
SCSI
Small Computer System Interface. An ANSI interface defining the physical and
electrical parameters of a parallel I/O bus used to connect hosts to a maximum
of seven devices. The StorageWorks device interface is implemented according to
the SCSI–2 standard, allowing the synchronous transfer of 8-bit data at rates of
up to 10 MB/s.
shelf brackets
Sheet metal components designed to attach and position StorageWorks shelves in
their associated enclosures.
signal converter
A device that converts the protocol and hardware interface of one bus type into
that of another without changing the functionality of the bus. See adapter.
single cabinet power configuration
A cabinet ac power configuration in which only one ac source and one ac power
supply is used to supply dc power to the cabinet’s SBB shelves.
skirt
A trim panel designed to mount around the base of the cabinet.
Small Computer System Interface
See SCSI.
storage sets
A grouping of disk drives that make up a new distinct container.
StorageWorks
Digital’s family of modular data storage products that allows customers to
design and configure their own storage subsystems. Components include power,
packaging, cabling, devices, controllers, and software. Customers can integrate
devices and array controllers in StorageWorks enclosures to form storage
subsystems.
StorageWorks building block
See SBB.
stripesets
In a RAID configuration, a virtual disk drive with its physical data spread across
multiple physical disks. Stripeset configurations do not include a data recovery
mechanism.

Glossary–8

supported device
A device tested as functionally compatible with an approved StorageWorks
hardware and software configuration.
System Communications Services
See SCS.
Tape Inline Exerciser
See TILX.
TILX
Tape Inline Exerciser. Diagnostic firmware used to test the data transfer
capabilities of tape drives in a way that simulates a high level of user activity.
VAXcluster System Console
See VCS.
VCS
VAXcluster System Console. This terminal allows access to hosts (by networks).
Another method of accessing the controller. See also DUP.
virtual terminal
A software path from an operator terminal on the host to the controller’s CLI
interface. The path can be established via the host port on the controller (using
DUP) or via the maintenance port through an intermediary host (VCS). A virtual
terminal is also sometimes called a host console.
warm swap
A controller function that allows devices to be added, removed, or replaced while
the subsystem remains operational. All activity on the device’s SCSI bus must
normally be halted for the duration of the warm swap operation.
write through cache
A technique for handling host write requests in read caches. When the host
requests a write operation, the cache writes data directly to the external storage
device and updates the cache memory to ensure that the memory does not
contain obsolete data. This technique increases the chances that future host
read requests can be filled from the cache. The host sees the write operation as
complete only after the external storage device has been updated. See also read
cache.
write-back cache
A cache configuration that increases the performance of host write requests.
When the host requests a write operation, the cache writes the host’s data first to
the cache memory, completing the host’s request quickly. It performs the slower
operation of flushing the data to the external storage device at a later time. The
host sees the write operation as complete when the data has reached the cache.

Glossary–9

Index
A
Accessing cabinet rack space, 7–3
Air separation panels, 2–9, 7–1
in SW500 controller/storage cabinets, 6–4
in SW500 storage-only cabinets, 5–3
installation, 7–13

B
Brackets
screw-mounted shelf, 7–2
tab-mounted shelf, 7–2

C
Cabinet
cooling, 2–9
inspecting, 4–9
leveling, 4–6, 4–8
placement of, 4–7
powering, 4–10
ramp unloading procedures, 4–4
site preparation, 3–1
unloading, 4–4
unpacking, 4–1
Cabinet access, 7–3
Cabinet components, 2–4
cabinet, 2–4
CDUs, 2–4
controller shelves, 2–4
SBB shelves, 2–4
SBBs, 2–4
shelf brackets, 2–4
TZ8x7-series tape drives, 2–6
Cabinet preparation and shutdown, 7–3
Cable distribution units
power cables used, 9–1
type used, 9–1
Cable routing, general
in SW500 controller/storage cabinets, 6–9
in SW500 storage-only cabinets, 5–4
CI bulkhead, 6–5, 6–7
Cooling, cabinet, 2–9

D
Description, of SW500 cabinet, 2–1

E
Environmental stabilization, 4–1
ESD grounding posts, 7–9
Exterior panels
reinstalling, 7–15, 8–13
removing, 7–3

F
Filler panels, 2–9
in SW500 controller/storage cabinets, 6–4
in SW500 storage-only cabinets, 5–3

G
Grounding posts, 7–9
Grounding, equipment, 3–2

H
Host SCSI–2 signal cable routing
in SW500 controller/storage cabinets, 6–7, 6–8
Host-to-controller CI cable routing
in SW500 controller/storage cabinets, 6–5, 6–7
How to use this manual, 1–1

I
Inspection
of cabinet installation, 4–9
of ramps, 4–4
of shipped equipment, 4–1
Installing
base trim kit, 4–8
StorageWorks shelves, 7–1
TZ8x7-series tape drives, 8–1
Internal CI cable routing, 6–5

Index–1

L
Leveling, cabinet, 4–8

O
Overview, 2–1

P
Placement, of cabinet, 4–7
Power configuration
of SW500 controller/storage cabinets, 6–5
of SW500 storage-only cabinets, 5–4
Power configurations, 2–7, 9–1
dual shelf power configuration, 2–8
dual-cabinet power configuration, 2–9, 9–3
dual-shelf power configuration, 9–2
single cabinet power configuration, 9–2
single-cabinet power configuration, 2–7
Power receptacles, site, 3–1
Power system survey, 3–3
Powering up, cabinet, 4–10

R
Ramps
inspection, 4–4
unloading, 4–4
Removal, cabinet from pallet, 4–4
Removing
exterior cabinet panels, 7–3
top cover, 7–3

S
Screw-mounted shelf brackets, 7–2
SCSI–2 cable lengths
in SW500 controller/storage cabinets, 6–9
SCSI–2 cable routing
in SW500 controller/storage cabinets, 6–9
in SW500 storage-only cabinets, 5–4
Shelf bracket kits
description, 7–1
parts list, 7–2
screw-mounted, 7–1
screw-mounted configurations, 7–2
tab-mounted, 7–1
tab-mounted configurations, 7–3
Shelf bracket types, 7–2
Shelf locations
in SW500 controller/storage cabinets, 6–2, 6–3
in SW500 storage-only cabinets, 5–1, 5–2
Shelf SCSI–2 cable selection and connection
in SW500 controller/storage cabinets, 6–9
in SW500 storage-only cabinets, 5–4

Index–2

Shelves, StorageWorks
installation of, 7–1, 7–5
Shutdown of devices and power, 7–3
Side panels
reinstalling, 7–15, 8–13
removal, 8–2
removing, 7–3, 8–2
Signal cable routing
in SW500 controller/storage cabinets, 6–5
in SW500 storage-only cabinets, 5–4
Site preparation, 3–1
Specifications
environmental stabilization, 4–1
SW500 cabinet, 2–1
Stabilization, thermal, 4–1
SW500 controller/storage cabinets
cable routing, general, in, 6–9
configuration of, 6–1
host CI signal cable routing in, 6–5
host SCSI–2 signal cable routing in, 6–7, 6–8
host-to-controller CI cable routing in, 6–7
power configuration of, 6–5
SCSI–2 cable lengths in, 6–9
SCSI–2 cable routing in, 6–9
shelf locations in, 6–2, 6–3
TZ8x7-series tape drive locations in, 6–3
SW500 storage-only cabinets
cable routing, general, in, 5–4
configuration of, 5–1
power configuration of, 5–4
SCSI–2 cable routing in, 5–4
shelf locations in, 5–1, 5–2
signal cable routing in, 5–4
TZ8x7-series tape drive locations in, 5–2

T
Tab-mounted shelf brackets, 7–2
Thermal stabilization, 4–2
Top cover
removing, 7–3
Trim kit, installing, 4–8
TZ8x7-series tape drives
chassis rail, 8–1
chassis rail installation, 8–4
installation of, 8–1
locations in SW500 controller/storage cabinets,
6–3
locations in SW500 storage-only cabinets, 5–2
power cord installation, 8–13
SCSI–2 signal cabling, 8–13
tape bezel, 8–1
tape bezel kit installation, 8–13
tape drive enclosure mounting, 8–10

U
Unloading, cabinet, 4–4
Unpacking, cabinet, 4–1

Index–3