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Document:	VELOCITOR Enhanced IPI-2 Desktop Storage Subsystem User's Guide
Order Number:	EK-VLTOR-UG
Revision:	B01
Pages:	44
Original Filename:

OCR Text

VELOCITOR Enhanced IPI-2
Desktop Storage Subsystem
User’s Guide
Order Number: EK-VLTOR-UG. B01

Revision/Update Information:

This is a revised manual

September 1993
December 1993
The information in this document is subject to change without notice and should not be construed
as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no
responsibility for any errors that may appear in this document.
FCC NOTICE: This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference, in which case users will be required to correct the interference at their own expense.

© Digital Equipment Corporation 1993. All Rights Reserved.
All rights reserved
Printed in U.S.A.
The following are trademarks of Digital Equipment Corporation: Alpha AXP, AXP, MSCP,
TURBOchannel, ULTRIX, VAX, VAX DOCUMENT, VELOCITOR, and the DIGITAL Logo.
Seagate and Elite are registered trademarks of Seagate Technology, Inc.
GENROCO, TURBOstor, IPI-242T, and IPI-242F are registered trademarks of GENROCO
International, Inc.
OSF/1 is a registered trademark of Open Software Foundation, Inc.
Portions of this manual have been reproduced from the Seagate ST43200K User’s Manual (Revision
B) with permission of Seagate Technology, Inc.

This document was prepared using VAX DOCUMENT Version 2.1.

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

vii

1 Introduction
1.1
1.2
1.3

Storage Subsystem Overview . . . . . . . . . . . . . . . . . . . . . . .
IPI-2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum Operating System Versions . . . . . . . . . . . . . . . .

1–1
1–2
1–2

2 Technical Description
2.1
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.2
2.2.1
2.2.2
2.2.3

VELOCITOR Storage Subsystem . . . . . . . . . . . . . . . . . . . .
TURBOstor IPI-242T/F Disk Controller . . . . . . . . . . . .
Enhanced IPI-2 Disk Drives . . . . . . . . . . . . . . . . . . . . .
Desktop Storage Enclosure . . . . . . . . . . . . . . . . . . . . .
External Interface Connections . . . . . . . . . . . . . . . . . .
Dual Porting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . .
Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–1
2–1
2–1
2–1
2–2
2–2
2–3
2–3
2–3
2–3

3 Set Up and Installation
3.1
3.1.1
3.1.2
3.1.3
3.2
3.3
3.4
3.5
3.6
3.7

Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Required Materials . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting the Power Cord . . . . . . . . . . . . . . . . . . . . . . . .
Setting the IPI-2 Disk IDs . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting a Single Ported Desktop Enclosure . . . . . . . . .
Adding a Single Ported Desktop Enclosure . . . . . . . . . . . .
Connecting Dual Ported Desktop Enclosures . . . . . . . . . . .
Powering On/Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1
3–1
3–1
3–2
3–2
3–2
3–3
3–5
3–5
3–8

iii

3.8
3.9
3.10
3.11

Software Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EEPROM Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TURBOraid Disk Striping . . . . . . . . . . . . . . . . . . . . . . . . .
TURBOraid Disk Shadowing . . . . . . . . . . . . . . . . . . . . . . .

3–9
3–9
3–10
3–10

4 Maintenance and Problem Solving
4.1
4.1.1
4.1.2
4.2
4.3
4.3.1
4.3.2
4.3.3

TURBOstor Offline Maintenance Utility (OMU) . . . . . . . .
Drive Formatting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other Maintenance Operations . . . . . . . . . . . . . . . . . .
Problem Solving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventive Maintenance, Cleaning, and Repairs . . . . . . . .
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–1
4–1
4–2
4–3
4–3
4–3
4–3
4–3

A VELOCITOR Storage Subsystem Upgrade
A.1
A.2
A.3
A.4

Powering Down the Storage Enclosure . . . . . . . . . . . . . . .
Removing the Enclosure Cover . . . . . . . . . . . . . . . . . . . . .
Installing a Seagate ST43200K Disk Drive . . . . . . . . . . . .
Replacing the Enclosure Cover . . . . . . . . . . . . . . . . . . . . . .

A–1
A–2
A–4
A–8

B Seagate Drive Jumpering
B.1
B.1.1
B.1.2
B.1.3
B.1.4

Seagate Drive Jumpering . . . . . . . . . . . . . . . . . . . . . . . . . .
Microcode ID0 - ID3 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enable Short Rotational Position Sensing (RPS)1 . . . .
Disable Read/Write Diagnostics (RWD) . . . . . . . . . . . .
Enable Position Calibration on Seek (SWP) . . . . . . . . .

B–1
B–2
B–2
B–3
B–3

Power Cord Connection and ID Switch Location . . . . .
Single Ported Desktop Enclosure . . . . . . . . . . . . . . . . .
Dual Ported Desktop Enclosures . . . . . . . . . . . . . . . . .
On/Off Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Enclosure Cover . . . . . . . . . . . . . . . . . .
Drive Positions and Mounting . . . . . . . . . . . . . . . . . . .
Connecting a Seagate ST43200K . . . . . . . . . . . . . . . . .
Replacing the Enclosure Cover . . . . . . . . . . . . . . . . . . .

3–2
3–4
3–7
3–8
A–3
A–5
A–7
A–9

Figures
3–1
3–2
3–3
3–4
A–1
A–2
A–3
A–4

B–1
B–2
B–3
B–4

I/O Board Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J10 and J12 Control Board Jumpers . . . . . . . . . . . . . .
J10 Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J12 Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B–1
B–4
B–5
B–6

Desktop Enclosure Weight . . . . . . . . . . . . . . . . . . . . . .
Desktop Enclosure Dimensions . . . . . . . . . . . . . . . . . .
Desktop Enclosure Specifications . . . . . . . . . . . . . . . . .
Single Ported Disk Drive Jumpers . . . . . . . . . . . . . . . .
Dual Ported Disk Drive Jumpers . . . . . . . . . . . . . . . . .

2–3
2–3
2–3
3–3
3–6

Tables
2–1
2–2
2–3
3–1
3–2

Preface

Purpose of this Guide
This guide is designed to provide information on installing, operating, and
maintaining the VELOCITOR storage subsystem. It should be used in
conjunction with the documentation listed in the Related Documentation
section.

Who Should Use this Guide
This guide is a support and reference document for engineers and system
managers who have basic knowledge of hardware configurations, as well as
system management training with ULTRIX and OSF/1 operating systems.

Organization
This guide is divided into four chapters and two appendicies:
Chapter 1 - Provides an introduction and general description of the VELOCITOR
storage subsystem.
Chapter 2 - Provides a technical description of the VELOCITOR storage
subsystem and specifications for the enclosure.
Chapter 3 - Explains how to prepare and install the VELOCITOR storage
subsystem.
Chapter 4 - Provides basic problem solving and maintenance information.
Appendix A - Describes how to upgrade a single drive enclosure.
Appendix B - Provides Seagate disk drive jumper information.

vii

Conventions Used in this Guide
The following conventions are used in this document:
Note

A note calls the reader’s attention to any item of information that may be
of special importance.

Caution

A caution contains information essential to avoid damage to the
equipment.

Warning

A warning contains information essential to the safety of personnel.

Related Documentation
The following documents provide additional information about the VELOCITOR
storage subsystem and the host systems:
Title

Source

Part Number

DEC 3000 Model 500/500S AXP Owner’s Guide

Digital

EK-FLAMI-OG

DEC 3000 Model 500/500S AXP Options Guide

Digital

EK-FLAMI-IG

DEC 3000 Model 400/400S AXP Owner’s Guide

Digital

EK-SNDPR-OG

DEC 3000 Model 400/400S AXP Options Guide

Digital

EK-SNDPR-OP

DEC 4000 AXP Options Guide

Digital

EK-KN430-OG

DEC 4000 AXP Owner’s Guide

Digital

EK-KN430-OP

DECstation 5000 Model 240 Hardware
Installation Guide

Digital

EK-PM38A-IN

DECstation 5000 Model 240 Operator’s Guide

Digital

EK-PM38B-OG

DECstation 5000 Model 260 Operator’s Guide

Digital

EK-4MAXX-OP

Guide to Installing DEC OSF/1

Digital

AA-PS2DA-TE

Guide to Installing ULTRIX

Digital

AA-PBL0E-TE

TURBOstor IPI-242F IPI Disk Controller User’s
Manual

GENROCO

740-42FV

TURBOstor IPI-242T IPI Disk Controller User’s
Manual

GENROCO

740-42TV

Seagate ST43200K User’s Manual

Seagate

83327650

viii

1
Introduction

1.1 Storage Subsystem Overview
The VELOCITOR storage subsystem is designed for applications that demand a
high I/O throughput. It is a high-performance Enhanced Intelligent Peripheral
Interface (IPI-2) disk subsystem. This subsystem consists of a low profile desktop
enclosure with 5.25 inch IPI-2 disks manufactured by Seagate Technology, Inc.
and either a TURBOchannel controller or Futurebus+ controller manufactured by
GENROCO International, Inc.
The desktop enclosure can accommodate up to two three-gigabyte (Gb) drives. Up
to four two-drive enclosures (eight drives maximum) can be daisy chained to a
single controller.
In this document, information that applies to the TURBOchannel and the
Futurebus+ disk controller will be referred to as the IPI-242T/F disk controller.
Information that applies only to the TURBOchannel disk controller will be
referred to as the IPI-242T disk controller and information that applies only to
the Futurebus+ disk controller will be referred to as the IPI-242F disk controller.

Introduction 1–1

Introduction

1.2 IPI-2 Overview
Users of high-performance systems are limited in terms of disk performance by
the overhead the Small Computer System Interface (SCSI) has in supporting
disks, tapes, printers, scanners, and so forth. The enhanced IPI-2 interface is a
dedicated interface that supports a single device type and improves system I/O
capabilities.
The interface is the communications channel between the controller and the
drive. It provides high-speed transfer of commands, responses, and data between
the controller and the drive.
IPI-2 is appropriate in either workstation or server environments where sustained
disk throughput is required. From the host operating system’s point of view an
IPI disk emulates an RA-series device using Mass Storage Control Protocol
(MSCP).

1.3 Minimum Operating System Versions
The VELOCITOR storage subsystem requires the following minimum operating
system versions:
•

ULTRIX Version 4.2

•

OSF/1 Version 1.2

1–2 Introduction

2
Technical Description

2.1 VELOCITOR Storage Subsystem
The following is an overview of the major components of the VELOCITOR storage
subsystem.

2.1.1 TURBOstor IPI-242T/F Disk Controller
The GENROCO TURBOstor IPI-242T disk controller occupies a single
TURBOchannel slot in the host computer. The GENROCO TURBOstor IPI-242F
disk controller occupies a single Futurebus+ option slot in the host computer.
For specific details refer to the TURBOstor IPI-242T IPI Disk Controller User’s
Manual or the TURBOstor IPI-242F IPI Disk Controller User’s Manual. This
manual provides an overview on installing and configuring the controller into the
host computer, and installing and performing software setup.

2.1.2 Enhanced IPI-2 Disk Drives
The Enhanced IPI-2 Seagate 5.25-inch disk drive features include read/write
buffers, zone mapped disk drives, parallel heads, and drive error code correction
(ECC). For further details refer to the Seagate ST43200K User’s Manual.

2.1.3 Desktop Storage Enclosure
This enclosure is part of the Digital SZ16 storage expansion series, utilizing
the same power supply and low profile enclosure. These enclosures have been
modified to accommodate up to two IPI-2 disk drives.
The internal cables link the drive or drives, in series, to the enclosure rear panel.

Technical Description 2–1

Technical Description

2.1.4 External Interface Connections
The storage expansion box rear panel has four IPI interface connectors:
•

Port A IPI-2 IN (male)

•

Port A IPI-2 OUT (female)

•

Port B IPI-2 IN (male)

•

Port B IPI-2 OUT (female)

The maximum total IPI-2 cable length is 50 m (164 ft).
In a typical single port application a shielded 50 conductor cable is connected
from the IPI-242T/F controller to the A IN port on the rear of the enclosure. The
bus is terminated by installing an IPI-2 terminator on the A OUT connector.
Terminators should be installed on all unused connectors.

2.1.5 Dual Porting
Each disk drive has two independent ports that can be connected to two
separate controllers. These dual ports allow a disk to be shared between
two disk controllers, thus enabling a second data path to be used. This is a
robust configuration, because the two data paths are electrically and logically
independent.

2–2 Technical Description

Technical Description

2.2 Specifications
This section provides specifications for the VELOCITOR storage subsystem. For
the TURBOstor controller and the Seagate ST43200K disk drive specifications
refer to the related documentation listed in the Preface.

2.2.1 Physical Specifications
Table 2–1 and Table 2–2 provide the physical specifications.
Table 2–1 Desktop Enclosure Weight
Number of Drives

Weight

One

10.7 kg (23.5 lb)

Two

14.8 kg (32.5 lb)

Table 2–2 Desktop Enclosure Dimensions
Height

Width

Depth

10.9 cm (4.3 in)

48.3 cm (19.0 in)

38.35 cm (15.5 in)

2.2.2 Electrical Specifications
Table 2–3 provides the electrical specifications.
Table 2–3 Desktop Enclosure Specifications
Electrical Specifications
Input voltage

Automatically adjusting ac input 100 V ac to 240 V ac

Frequency range

47 to 63 Hz

2.2.3 Heat Dissipation
A two drive desktop enclosure generates approximately 1000 BTUs.

Technical Description 2–3

3
Set Up and Installation
This chapter contains the following set up and installation information for the
VELOCITOR storage subsystem:
•

Subsystem prerequisites

•

Connecting the power cord

•

IPI-2 drive ID switch settings

•

Configuring the subsystem

•

Powering the VELOCITOR storage subsystem on and off

•

Software installation

•

TURBOraid disk striping and shadowing

3.1 Requirements
The subsystem is configured with one or two drives as ordered. The Seagate
drives are preformatted with a data block size of 4096 bytes per sector.

3.1.1 Site Preparation
The VELOCITOR storage subsystem requires a minimum of 20.3 cm (8 in) rear
clearance for cabling and 12.7 cm (5 in) clearance on each side for cooling.

3.1.2 Required Materials
The following materials are required to prepare your system:
•

Phillips screwdriver

•

Antistatic wrist strap

•

TURBOstor IPI-242T IPI Disk Controller User’s Manual or the TURBOstor
IPI-242F IPI Disk Controller User’s Manual

•

Seagate ST43200K User’s Manual

Set Up and Installation 3–1

Set Up and Installation

3.1.3 Power Requirements
The power supply in the desktop enclosure is an auto-ranging 120 V ac to 240 V
ac, 43 to 63 Hz single phase supply.

3.2 Connecting the Power Cord
Connect the power cord to the rear of the desktop storage enclosure as shown in
Figure 3–1, and plug the other end into an electrical outlet.

3.3 Setting the IPI-2 Disk IDs
The IPI-2 disk drive IDs can be set between 0-7 by setting the push switch shown
in Figure 3–1. All drives are required to have unique IDs.
Figure 3–1 Power Cord Connection and ID Switch Location
Disk 0 ID Switch

Disk 1 ID Switch

CS-10151

3–2 Set Up and Installation

Set Up and Installation

3.4 Connecting a Single Ported Desktop Enclosure
Note
The VELOCITOR storage subsystem can be configured as a single
or dual ported storage device. The factory default setting is single
ported. For dual ported information refer to Section 3.6.
The following steps outline how to install and configure a single ported
VELOCITOR storage subsystem.
1. Use the host system owner’s/operator’s guide and the TURBOstor IPI-242T
IPI Disk Controller User’s Manual or the TURBOstor IPI-242F IPI Disk
Controller User’s Manual to install the IPI-242T/F disk controller into a
vacant TURBOchannel slot or Futurebus+ slot.
2. For single ported storage devices, no internal drive jumper changes are
necessary. Table 3–1 lists the factory default jumper settings. For more
information on drive jumpering refer to Appendix B.
Table 3–1 Single Ported Disk Drive Jumpers
Jumper Description

Location

State

Master/Slave

J12

Out

Local/Remote

J12

Read/Write Diagnostics

I/O board

Background Sweeps

I/O board

Out

Sweep on Seek

J12

Write Enable

J10

Out

Disable Port A

J10

Out

Disable Port B

J10

Set Up and Installation 3–3

Set Up and Installation

3. Connect the male end of the data cable to the IPI-242T/F disk controller and
the female end to the Port A IN on the back of the VELOCITOR enclosure.
See Figure 3–2.
4. Terminate both the Port A and B OUT ports on the back of the VELOCITOR
enclosure along with the unused Port B IN with the supplied terminators.
See Figure 3–2.
Figure 3–2 Single Ported Desktop Enclosure

Port A OUT Terminator
Port B OUT Terminator

Port A IN
(From IPI-242T/F
Controller)

Port B IN Terminator
CS-10152

3–4 Set Up and Installation

Set Up and Installation

3.5 Adding a Single Ported Desktop Enclosure
To add an additional single ported subsystem to an existing configuration, remove
the terminator on the Port A OUT of the original storage expansion enclosure.
Connect the male end of the data cable to the Port A OUT of the first enclosure
and connect the female end to the Port A IN of the second enclosure. Terminate
the Port A OUT of the second, or in the case of several expansion enclosures, the
last enclosure.

3.6 Connecting Dual Ported Desktop Enclosures
The following steps outline how to install and configure a dual ported
VELOCITOR storage subsystem or systems.
1. Use the host system owner’s/operator’s guide and the TURBOstor IPI-242T
IPI Disk Controller User’s Manual or the TURBOstor IPI-242F IPI Disk
Controller User’s Manual to install the IPI-242T/F disk controllers into vacant
TURBOchannel slots or Futurebus+ slots.
2. Since the storage devices are configured for single ported operation it is
necessary to reconfigure the drives for dual porting. To reconfigure the
drives:
a. Follow the instructions in Appendix A for removing the cover of the
storage subsystem.
b. Locate jumper J10 using Figure B–2.
c.

Remove the shunt jumper corresponding to Disable Port B (DB) on the
drive or drives. Table 3–2 lists the jumper settings to be used for dual
porting. For more information on drive jumpering see Appendix B.

d. Replace the cover to the subsystem.

Set Up and Installation 3–5

Set Up and Installation

Table 3–2 Dual Ported Disk Drive Jumpers
Jumper Description

Location

State

Master/Slave

J12

Out

Local/Remote

J12

Read/Write Diagnostics

I/O board

Background Sweeps

I/O board

Out

Sweep on Seek

J12

Write Enable

J10

Out

Disable Port A

J10

Out

Disable Port B

J10

Out

3. Connect the male end of the data cable to the IPI-242T/F disk controller and
the female end to the Port A IN on the back of the VELOCITOR storage
subsystem.
4. Connect the male end of the other data cable to the second IPI-242T/F disk
controller and the female end to the Port B IN. See Figure 3–3.
5. If there is only one storage subsystem enclosure or it is the last storage
subsystem, terminate both the Port A and B OUT ports on the back of the
VELOCITOR storage subsystem with the supplied terminators.
If an additional enclosure is to be added, prepare the enclosure as described
above for dual porting. Then take the male end of the data cable and connect
it to the Port A OUT of the first enclosure and connect the female end to the
Port A IN of the second enclosure. Repeat this procedure for Port B and then
terminate. See Figure 3–3 for an illustration of two dual ported expansion
enclosures.

3–6 Set Up and Installation

Set Up and Installation

Figure 3–3 Dual Ported Desktop Enclosures
Ports A and B OUT Terminators

From Port A Controller
From Port B Controller
CS-10153

Set Up and Installation 3–7

Set Up and Installation

3.7 Powering On/Off
The enclosure On/Off switch is illustrated in the off (O) position in Figure 3–4.
Configuration changes and external cable connections must be made prior to
turning on power to the desktop storage subsystem(s). Turn on power to the
subsystem(s) before turning on power to the host system.
The storage subsystems are jumpered to allow a sequenced delay for spindle spin
up after power on. Power is applied to each drive 10 seconds after the previous
drive in the sequence has received power. Each drive takes approximately 30
seconds (maximum) to spin up after it receives dc power.
Figure 3–4 On/Off Switch

CS-10154

3–8 Set Up and Installation

Set Up and Installation

3.8 Software Setup
The subsystem software driver is supplied on a CD-ROM or other media for
the Alpha AXP OSF/1 or ULTRIX operating system. Refer to the TURBOstor
IPI-242T IPI Disk Controller User’s Manual or the TURBOstor IPI-242F IPI Disk
Controller User’s Manual for information on how to:
•

Install TURBOstor software

•

Modify the configuration file

•

Build a new OSF/1 or ULTRIX kernel

•

Partition the disk(s)

•

Create an OSF/1 or ULTRIX file system
Caution
Read the TURBOstor Software Installation & Setup chapter in
the appropriate user’s manual completely before performing
the software installation and setup. Pay particular attention to
the section on partitioning disk(s) and building file systems to
prevent system or performance problems. Failure to follow the
instructions could result in system errors or loss of performance
if the disks are incorrectly partitioned.

Caution
Back up your system disk before installing the IPI-242T/F driver.

3.9 EEPROM Parameters
There are several parameters that can be changed by using the TURBOstor
Offline Maintenance Utility (OMU). Refer to the TURBOstor IPI-242T IPI Disk
Controller User’s Manual or the TURBOstor IPI-242F IPI Disk Controller User’s
Manual for instructions on using OMU.
One parameter has been factory preset and is different from the default EEPROM
values: data block size (default - 512, factory setting - 4096).

Set Up and Installation 3–9

Set Up and Installation

Caution
If you use the OMU to check the parameters that are set for your
device, do not answer "yes" to the query "Set default parameters
(y/n)." Otherwise you will reset all the EEPROM parameters back
to the default settings, including the data block size and the cache
size.

3.10 TURBOraid Disk Striping
The IPI-242T/F supports TURBOraid controller-based disk striping, providing
controller-based RAID 0 functionality for your IPI system. TURBOraid controllerbased striping improves I/O performance by interleaving pairs of disks, making
them appear to the operating system as a single, faster disk with twice the
capacity. The operations of TURBOraid striping are completely transparent to
the user.
TURBOraid striping is enabled by setting an EEPROM parameter. Refer to
the TURBOstor IPI-242T IPI Disk Controller User’s Manual or the TURBOstor
IPI-242F IPI Disk Controller User’s Manual for more information on TURBOraid
striping.

3.11 TURBOraid Disk Shadowing
The IPI-242T/F supports TURBOraid controller-based disk shadowing, providing
controller-based RAID 1 functionality for your IPI system. TURBOraid controllerbased disk shadowing automatically maintains a duplicate copy of the data from
one disk on another disk, providing greater data availability, and in some cases,
improved I/O performance.
TURBOraid shadowing is enabled by setting an EEPROM parameter. Refer to
the TURBOstor IPI-242T IPI Disk Controller User’s Manual or the TURBOstor
IPI-242F IPI Disk Controller User’s Manual for more information on TURBOraid
shadowing.

3–10 Set Up and Installation

4
Maintenance and Problem Solving

4.1 TURBOstor Offline Maintenance Utility (OMU)
Offline maintenance functions such as drive formatting, setting the EEPROM
parameters, and diagnostic functions can be performed using the IPI-242T/F
controller TURBOstor Offline Maintenance Utility (OMU). The IPI-242T/F
controller uses a microcode program in firmware to perform these functions.
Caution
Always back up your disks before performing any function in the
Drive Formatting submenu.

4.1.1 Drive Formatting
The drives in the VELOCITOR storage subsystem are preformatted to 4096 bytes
per sector and typically do not require reformatting.
Note
All drives connected to a controller must be formatted using the
same data block size. Drives in a dual-ported configuration must
also be formatted using the same data block size.

Maintenance and Problem Solving 4–1

Maintenance and Problem Solving

For information on formatting a drive refer to the TURBOstor IPI-242T IPI Disk
Controller User’s Manual or the TURBOstor IPI-242F IPI Disk Controller User’s
Manual. In addition, the following functions are available under the formatting
menu:
•

Display media defects

•

Process media defects

•

Media check patterns

•

Data copy

•

Data compare

•

Display bad block table (RCT)

•

Display bad block replacements

•

Format/test multiple drives

•

Replace LBN
Caution
Data is overwritten during reformatting. Always back up data
before reformatting the disk.

4.1.2 Other Maintenance Operations
Other functions that can be performed using the OMU are:
•

Display drive characteristics

•

Seek test

•

Data rate test

•

Change EEPROM parameters

•

Spin-up drive

•

Spin-down drive

These options are described in the TURBOstor IPI-242T IPI Disk Controller
User’s Manual or the TURBOstor IPI-242F IPI Disk Controller User’s Manual.

4–2 Maintenance and Problem Solving

Maintenance and Problem Solving

4.2 Problem Solving
To ensure that the installation was performed correctly, perform the quick
operational check as described in the TURBOstor IPI-242T IPI Disk Controller
User’s Manual or the TURBOstor IPI-242F IPI Disk Controller User’s Manual.
Further troubleshooting and diagnostic information is also documented.
In addition, the following list contains some basic checks that can be done:
1. Ensure that the drive enclosures are correctly cabled in series, with the
controller at one end and a terminated enclosure at the other.
2. Secure all cables and terminators with screw-posts.
3. Turn power on to the drive enclosure(s) before turning power on to the
system.
4. Verify that the IPI-242T/F controller data block size parameter matches the
format on the drive.
5. Ensure that all disk drives have unique IDs between 0-7.
If the above steps or the quick checks do not work, contact your local Digital
Customer Service Center for support on your VELOCITOR storage subsystem.

4.3 Preventive Maintenance, Cleaning, and Repairs
4.3.1 Preventive Maintenance
The VELOCITOR storage subsystem is designed to be preventive maintenance
free.

4.3.2 Cleaning
Periodically, the ventilation should be checked to ensure that air is being
exhausted through the enclosure side. If the enclosure appears dusty, then
the outside can be cleaned with an antistatic foam cleaner. Do not allow any
liquid to enter the unit. Always spray a cleaner onto the applying cloth. In
extremely dusty conditions, vacuum the enclosure internals.

4.3.3 Repairs
Repairs should be performed by trained service personnel.

Maintenance and Problem Solving 4–3

A
VELOCITOR Storage Subsystem
Upgrade
This appendix describes upgrading the VELOCITOR storage subsystem from a
single drive to a dual drive configuration.

A.1 Powering Down the Storage Enclosure
Before attempting to remove the cover of the storage enclosure, allow at least 5
minutes after the storage subsystem is turned off to provide time for the drives to
spin down and the power supply to discharge.

VELOCITOR Storage Subsystem Upgrade A–1

VELOCITOR Storage Subsystem Upgrade

A.2 Removing the Enclosure Cover
Caution
ESD procedures must be followed when performing any
maintenance/upgrades.
To remove the cover:
1. Disconnect the power cord.
2. Disconnect the IPI-2 data cables.
3. Release the two latches and lift the cover off, as shown in Figure A–1, until
the cover unhinges. Lift with sufficient force to release the retention catches
on the middle of the front and rear edges of the cover.
4. Touch the TOUCH HERE space on the power supply.

A–2 VELOCITOR Storage Subsystem Upgrade

VELOCITOR Storage Subsystem Upgrade

Figure A–1 Removing the Enclosure Cover

CS-10155

VELOCITOR Storage Subsystem Upgrade A–3

VELOCITOR Storage Subsystem Upgrade

A.3 Installing a Seagate ST43200K Disk Drive
Upgrading the VELOCITOR subsystem from a single drive to a dual drive
enclosure requires the installation of a Seagate ST43200K disk drive.
Upgrade the storage expansion box as follows:
1. Locate and remove the two angled mounting brackets, four screws, and four
washers already mounted inside the expansion box in drive position 1. See
Figure A–2.
2. Attach the mounting brackets to the drive by aligning the slots on the longer
side of the mounting brackets to the higher mounting holes on the drive sides.
Fasten with four 6-32 screws and washers.
3. Align and mount the drive with four 6-32 screws and washers in the storage
expansion enclosure in drive position 1 with the same orientation as the
existing drive.

A–4 VELOCITOR Storage Subsystem Upgrade

VELOCITOR Storage Subsystem Upgrade

Figure A–2 Drive Positions and Mounting

Drive mounting
bracket x 2

Drive Position 0

Drive mounting holes
in the base plate x 8
Drive Position 1

CS-10156

VELOCITOR Storage Subsystem Upgrade A–5

VELOCITOR Storage Subsystem Upgrade

4. Connect cables as follows (see Figure A–3):
a. Connect the dc power cable to connector J15.
b. Connect the drive ID select cable to connector J10 with the orientation
shown in Figure A–3.
c.

Connect the drive stub adapter cables, supplied with the upgrade kit, to
ports A (J31) and B (J32) of the drive.

d. Connect the other end of the Port A drive stub adapter cable to the
internal IPI data cable that is connected to Port A of the existing drive.
Repeat this step for Port B.
5. Verify all drive jumper settings. (See Table 3–1 or Table 3–2 for single or dual
ported settings, respectively.)

A–6 VELOCITOR Storage Subsystem Upgrade

VELOCITOR Storage Subsystem Upgrade

Figure A–3 Connecting a Seagate ST43200K

J10 - Drive ID

J15 - DC Power
Connector

J31 - Port A
Connector

To A Port Ribbon Cable

DC Power Cable In
J32 - Port B
Connector

To B Port Ribbon Cable

CS-10157

VELOCITOR Storage Subsystem Upgrade A–7

VELOCITOR Storage Subsystem Upgrade

A.4 Replacing the Enclosure Cover
Caution
Before closing the cover, ensure that the cabling has not been
disturbed and will not be in the way of the cover when closed.
Lower the cover so that the teeth on the hinge mesh as shown in Figure A–4.
The cover latches should click into place. Press firmly on the middle of the front
and the rear edges of the cover until you hear the retention catches click.

A–8 VELOCITOR Storage Subsystem Upgrade

VELOCITOR Storage Subsystem Upgrade

Figure A–4 Replacing the Enclosure Cover

CS-10158

VELOCITOR Storage Subsystem Upgrade A–9

B
Seagate Drive Jumpering
This appendix provides information on the location and setting of jumpers on the
Seagate Enhanced IPI-2 disk drive.

B.1 Seagate Drive Jumpering
Figure B–1 identifies the locations of jumpers on the I/O board. It also lists the
possible settings for normal drive operation.
Figure B–1 I/O Board Jumpers

DDM
RWD

ID0
ID1

RPS
SWP

ID2
ID3
W1

CS-10159

Seagate Drive Jumpering B–1

Seagate Drive Jumpering

B.1.1 Microcode ID0 - ID3
These jumpers assign a unique device configuration code. Use only one of the two
configuration codes.

Enable the J10 write protect/over temperature (W/T) pins
to determine over temperature status.

Enable the J10 write protect/over temperature (W/T) pins
to determine write protect status.

B.1.2 Enable Short Rotational Position Sensing (RPS)1
Enable the drive to perform short rotational position
sensing (RPS). This allows short RPS pulses to be
generated when the drive performs a seek and arrives
on-cylinder during the normal RPS pulse time.
Disable the RPS pulse for one full revolution if the
actuator arrives on-cylinder during the normal RPS pulse
time.

Enabling short RPS generally provides better performance by reducing the average
latency of a seek that includes RPS operation. This feature is available only during
non-buffered write operations.

B–2 Seagate Drive Jumpering

Seagate Drive Jumpering

B.1.3 Disable Read/Write Diagnostics (RWD)
Prevent internal diagnostic program from doing read and
write operations. This is the required setting if diagnostic
cylinder (2736) is used for customer data.

Enable internal diagnostic program to perform read and
write operations. The jumper is factory set to this position.

B.1.4 Enable Position Calibration on Seek (SWP)
Enable the drive to perform position compensation
calibration cycles only during a Load Cylinder or Load
Position operation (auto-initiated mode only).

Enable the drive to perform position compensation
calibration cycles only during idle time (auto-initiated
mode only).

Figure B–2 identifies J10 and J12 jumpers and gives their locations on the
control board. Figure B–3 and Figure B–4 list the possible settings for normal
drive operation for jumpers on the control board.

Seagate Drive Jumpering B–3

Seagate Drive Jumpering

Figure B–2 J10 and J12 Control Board Jumpers
Write Protect/Over Temp (W/T)
Disable Port B (DB)
Disable Port A (DA)
20 Unit Select
21 Unit Select
22 Unit Select
Port B Selected LED (not used)
Ready LED (not used)
J10

Message LED

Master/Slave (MS)

Port A Selected LED

Local/Remote (LR)

Logic Grounds

Sweep on Seek (SOS)
Unused

J12

CS-10160

B–4 Seagate Drive Jumpering

Seagate Drive Jumpering

Figure B–3 J10 Jumpers
Select unit ID, write protect,and disable port
options by placing jumpers as shown below
Unit Select ID = 0
Unit Select ID = 1
Unit Select ID = 2
Unit Select ID = 3
Unit Select ID = 4
Unit Select ID = 5
Unit Select ID = 6
Unit Select ID = 7
Disable Port A
Enable Port A (factory setting)
Disable Port B (factory setting)
Enable Port B
Report over-temperature status through the IPI
interface when this pin goes low. *
Do not report over-temperature status *
Enable writing (normal setting) **

CS-10161

Prevent writing (write protected) **
0

* Microcode ID positions 2 and 2 must both be jumpered for this option to be valid.
1

** Microcode ID position 2 must not be jumpered for this options to be valid.
Seagate Drive Jumpering B–5

Seagate Drive Jumpering

Figure B–4 J12 Jumpers
Master/Slave (MS)
Establishes the drive as a master.
(Factory setting.)
Establishes the drive as a slave. This allows the
host to control whether the drive is a master or
slave.

Local/Remote (LR)
Establishes the drive as the remote. Spin up
command from interface is required to start the
drive.
Establishes the drive as a local drive. Disk
spinup starts (after a delay) when DC power is
applied. (Factory setting.)

Sweep On Seek (SOS)
Enables the drive to perform background seeks
when a Load Position or Load Cylinder command
is issued by the host controller. If sweep mode is
desired, but the host controller cannot tolerate
drive busy conditions, this jumper should be
connected (enabled). (Factory setting.)
Disable sweeps on seek - If you want sweeps on
seek, and the host controller can tolerate drive
busy conditions, enable background sweeps as
described in Section B.1.4.

B–6 Seagate Drive Jumpering

CS-10162