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Document:	SF400 DECarray Owner's Manual
Order Number:	EK-SF400-OM
Revision:	C01
Pages:	70
Original Filename:

OCR Text

SF400 DECarray
Owner’s Manual
Order Number: EK–SF400–OM. C01

Digital Equipment Corporation
Maynard, Massachusetts

October 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.
No responsibility is assumed for the use or reliability of software on equipment that is not
supplied by Digital Equipment Corporation or its affiliated companies.
Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to
restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and
Computer Software clause at DFARS 252.227-7013.
© Digital Equipment Corporation 1993.
All Rights Reserved.
Printed in the United States of America.
FCC NOTICE: The equipment described in this manual 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 computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed
to provide reasonable protection against such radio frequency interference when operated
in a commercial environment. Operation of this equipment in a residential area may cause
interference, in which case the user, at his own expense, may be required to take measures to
correct the interference.
DEC, DECUS, DSSI, KFMSA, KFQSA, MicroVAX, MicroVMS, MSCP, PDP, Q-bus, TMSCP,
UNIBUS, VAX, VAXcluster, VAXserver, VAX Performance Advisor, VMS, XMI, and the DIGITAL
logo are trademarks of Digital Equipment Corporation.

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

vii

1 Introduction
1.1
1.2

DECarray Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Enclosure Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–1
1–7

2 TF8x7 Magazine Tape Subsystem
2.1
2.2
2.2.1
2.2.2
2.3
2.4
2.4.1
2.4.2
2.4.3
2.4.4
2.5
2.5.1
2.5.2
2.5.3
2.5.4

Power-On Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mode Select Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operator Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Slot Select, Load/Unload, and Eject Button Functions . . . . . . . . .
Selecting a Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading the Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unloading the Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Opening the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Magazine Cartridge Insertion and Removal . . . . . . . . . . . . . . . . .
Inserting a Cartridge into the Front of the Magazine . . . . . .
Removing a Cartridge from the Magazine . . . . . . . . . . . . . . .
Removing the Magazine from the Receiver . . . . . . . . . . . . . .
Installing the Magazine into the Receiver . . . . . . . . . . . . . . .

2–1
2–2
2–2
2–4
2–4
2–6
2–6
2–6
2–7
2–7
2–8
2–8
2–11
2–11
2–11

3 SF7x Series Storage Enclosure Operation
3.1
3.1.1
3.1.2
3.2
3.2.1
3.2.2

Storage Enclosure Configurations . . . . . . . . . . . . . . . . . . . . . . . .
Through-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Split-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Controls, Labels, and Indicators . . . . . . . . . . . . . . . .
Operator Control Panel (OCP) . . . . . . . . . . . . . . . . . . . . . . . .
Drive DC Power Switches . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1
3–1
3–2
3–3
3–3
3–9

iii

3.3
3.4
3.5
3.6

Rear Panel Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . .
Applying Power to the Enclosure . . . . . . . . . . . . . . . . . . . . . . . . .
Placing a Disk ISE On Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taking a Disk ISE Off Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–10
3–12
3–13
3–14

4 SF3x Series Storage Enclosure
4.1
4.1.1
4.1.2
4.2
4.2.1
4.2.2
4.3
4.4
4.5
4.6

SF3x Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Through-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Split-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Controls, Labels, and Indicators . . . . . . . . . . . . . . . .
Operator Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Power Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Panel Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . .
Applying Power to the Enclosure . . . . . . . . . . . . . . . . . . . . . . . . .
Placing a Disk On Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taking a Disk Off Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–1
4–2
4–4
4–5
4–7
4–8
4–8
4–11
4–12
4–12

A DECarray Configuration Sheets
Glossary
Index
Figures
1–1
1–2
1–3
1–4
2–1
2–2
2–3
2–4
2–5
3–1
3–2
3–3
3–4

DECarray Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DECarray Rear View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SF3x Series Storage Enclosure . . . . . . . . . . . . . . . . . . . . . . .
SF7x Series Storage Enclosure . . . . . . . . . . . . . . . . . . . . . . .
TF8x7 Operator Control Panel . . . . . . . . . . . . . . . . . . . . . . . .
Write Protect Switch on a Cartridge . . . . . . . . . . . . . . . . . . .
Inserting a Cartridge into the Magazine . . . . . . . . . . . . . . . .
Removing a Cartridge from the Front of the Magazine . . . . .
Receiver Opened . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Through-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Split-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front View of the Storage Enclosure . . . . . . . . . . . . . . . . . . .
OCP Switchpacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–2
1–3
1–8
1–9
2–3
2–9
2–10
2–12
2–13
3–2
3–3
3–4
3–7

3–5
3–6
4–1
4–2
4–3
4–4
A–1
A–2
A–3
A–4
A–5

Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Panel of the Storage Enclosure . . . . . . . . . . . . . . . . . . .
Through-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Split-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front View of the SF3x Storage Enclosure . . . . . . . . . . . . . . .
Rear Panel of the Storage Enclosure . . . . . . . . . . . . . . . . . . .
Single System Configuration Sheet (Dual Port) . . . . . . . . . . .
Two-Host DSSI VAXcluster System Configuration Sheet
(Dual Port) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Three-Host DSSI VAXcluster System Configuration Sheet
(Dual Port) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Single System Configuration Sheet (Single Port) . . . . . . . . . .
DSSI VAXcluster System Configuration Sheet (Single
Port) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–9
3–11
4–3
4–4
4–6
4–9
A–2

Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DECarray Storage Positions . . . . . . . . . . . . . . . . . . . . . . . . .
DECarray Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SF400 DECarray Acoustics Declaration . . . . . . . . . . . . . . . . .
Storage Enclosure Power Requirements . . . . . . . . . . . . . . . . .
TF8x7 Operator Control Panel . . . . . . . . . . . . . . . . . . . . . . . .
Summary of Front Panel Control/Indicator Functions . . . . . .
DSSI ID Switch Settings (Single System and Stripe Sets) . . .
DSSI ID Switch Settings (DSSI VAXcluster System) . . . . . . .
Summary of Rear Panel Control/Indicator Functions . . . . . . .
Operator Control Panel Functions . . . . . . . . . . . . . . . . . . . . .
Summary of Rear Panel Control/Indicator Functions . . . . . . .

viii
1–4
1–5
1–6
1–10
2–4
3–5
3–8
3–8
3–10
4–7
4–8

A–3
A–4
A–5
A–6

Tables
1
1–1
1–2
1–3
1–4
2–1
3–1
3–2
3–3
3–4
4–1
4–2

Preface
This manual is intended for the user of the SF400 storage array. This manual
provides the user with all the information needed to operate this array in a
safe and effective manner. The information in this manual is organized as
follows:
•

Chapter 1 contains a product description and specifications for the storage
array and storage enclosures.

•

Chapter 2 contains operating instructions for the TF857 magazine tape
loaders.

•

Chapter 3 describes how to start up the storage enclosure and how to bring
the disk ISE on line for normal operation.

•

Appendix A contains a number of blank configuration sheets for your use
when trying to configure different systems.

For troubleshooting, diagnostic, and other related information, refer to the
Tx857 Series Magazine Tape Subsystem Owner’s Manual.

vii

Related Documentation
Table 1 lists documentation that supplements this guide.
Table 1 Related Documentation

viii

Title

Order Number

DECarray SF400 Installation Guide

EK–SF400–IG

KFMSA Module Installation and User Manual

EK–KFMSA–IM

KFQSA Module Installation and User Manual

EK–KFQSA–IM

RFxx Series Integrated Storage Element User Guide

EK–RF7xD–UG

TF857 Magazine Tape ISE Service Manual

EK–TF857–SM

Tx857 Series Magazine Tape Subsystem Owner’s Manual

EK–TF857–OM

DECarray Owner’s Manual

EK–SF7xS–OM

System Expansion Installation Supplement

EK–431AB–IN

DSSI VAXcluster Installation and Troubleshooting Manual

EK–410AA–MG

1
Introduction
1.1 DECarray Overview
The SF400 DECarray is a storage cabinet designed to hold up to a total of 10
SF-series disk enclosures and TF-series tape loaders. The cabinet doors have
modular panels that allow flexibility of storage device locations. All storage
device operator control panels (OCP) project through the front door of the
storage array to allow easy access. In addition, the SF400 DECarray cabinet
provides optional dual ac power capability to provide redundant power.
The SF400 DECarray cabinet can be used with any CPU system that has
Digital Storage System Interconnect (DSSI) capability. It can be installed in
any location, relative to the CPU, allowed by the DSSI cabling length limits.
The DSSI cables from the CPU connect directly to the storage devices in the
cabinet. There is no DSSI panel in the SF400 DECarray cabinet.
Note
The equipment described in this manual is listed by the Underwriters
Laboratories Incorporated and bears the UL listing mark. The
SF400 DECarray cabinet is also certified by the Canadian Standards
Association and TUV Product Service GmbH, and bears both the CSA
certification and TUV GS marks.

Viewing the SF400 DECarray cabinet from the front, you will note that the
SF-series storage enclosures and magazine tape integrated storage elements
(ISEs) are arranged in the cabinet as shown in Figure 1–1. Figure 1–2 shows
the rear view of the cabinet.

Introduction 1–1

Introduction
1.1 DECarray Overview
Figure 1–1 DECarray Front View

CXO-3525A-TI_R

1–2 Introduction

Introduction
1.1 DECarray Overview
Figure 1–2 DECarray Rear View

POWER
CONTROLLER

CXO-3526A-TI_R

Introduction 1–3

Introduction
1.1 DECarray Overview
The DECarray cabinet has five levels, each with two storage enclosure
positions. The levels are numbered from the bottom up. As viewed from
the front, the odd-numbered positions are on the right, and even-numbered
positions are on the left. Table 1–1 lists these positions.
Table 1–1 DECarray Storage Positions
Level

Left Position

Right Position

1–4 Introduction

Introduction
1.1 DECarray Overview
Specifications for the SF400 DECarray cabinet are shown in Table 1–2.
Table 1–2 DECarray Specifications
Characteristic

Specification

Dimensions (nominal)

170.0 cm (66.93 inches) H, 80.0 cm (31.50
inches) W, 87.25 cm (34.35 inches) D

Weight
Minimum configuration
Maximum configuration
Agency compliance

228 kg (500 lb)
635 kg (1400 lb)
FCC, UL, IEC, CSA, TUV, and VDE

Electrical rating
SF400–XA

120/208 volts, 50/60 Hz, 3 phase Y,
24 amperes per phase

SF400–XD

380-415 volts, 50/60 Hz, 3 phase Y,
16 amperes per phase

Temperature

+10°C to +40°C (+50°F to +104°F)
Reduce rating by 1.8°C for each 1000
meters altitude (1.0°F for each 1000 feet
altitude)

Humidity

10 to 85 percent at maximum wet
bulb temperature of +32°C (+90°F) and
minimum dew point of +2°C (+36°F)
Recommended Environmental Limits1

Operating environment
Temperature

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

Relative humidity

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

Altitude

Up to 2400 meters (8000 feet)

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

1 These limits are for optimum equipment performance and reliability.

Continued on next page

Introduction 1–5

Introduction
1.1 DECarray Overview
Table 1–2 (Continued) DECarray Specifications
Characteristic

Specification
Recommended Environmental Limits1

Air volume (at inlet)

50 cubic feet per minute (0.026 cubic meters
per second)

Nonoperating environment
Temperature

-40°C to +66°C (-40°F to +151°F)

Relative humidity

10 to 80 percent noncondensing

Altitude

4900 meters (16,000 feet)

Nominal airflow through enclosure

360 to 650 cubic feet per minute

1 These limits are for optimum equipment performance and reliability.

Acoustic information is shown in Table 1–3.
Table 1–3 SF400 DECarray Acoustics Declaration
Sound Power Level
LWAd, B

Sound Pressure Level
LpAm, dBA
(Bystander Positions)

Acoustics–declared values per ISO 9296 and ISO 7779:
Product

Idle

Operate

Idle

Operate

SF400 with 10xSF35

7.3

SF400 with 10xSF73

7.1

SF35

6.3

SF73

6.1

Per device when
installed in SF400

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

1–6 Introduction

Introduction
1.2 Storage Enclosure Overview

1.2 Storage Enclosure Overview
The SF-series storage enclosures are available in two designs: the SF3x
enclosure, which contains up to twelve half-height, 3 1/2-inch ISEs, and the
SF7x enclosure, which contains up to four full-height, 5 1/4-inch ISEs.
Each disk ISE within an SF-series enclosure is independently controlled
from the OCP on the front of the enclosure. A power supply in the enclosure
provides the dc power for all disk ISEs installed in the enclosure. A blower fan
provides air flow for cooling.
The SF3x storage enclosure holds up to twelve RF3x series ISEs (Figure 1–3).
There are six slots in the front of the enclosure and six slots in the rear. Disk
ISEs installed in these slots plug directly into a backplane, which is cabled to
a connector tray on the top rear of the storage enclosure.
The SF3x enclosure can be configured in through-bus mode or split-bus mode.
In through-bus mode, the six ISEs in the front of the SF3x enclosure are
connected to a single DSSI bus, and the six ISEs in the rear of the SF3x
enclosure are connected to a second DSSI bus. In split-bus mode, each end
of the enclosure (front and rear) is further divided into left-side ISEs and
right-side ISEs, each connected to a separate DSSI bus. Thus, in split-bus
mode there are four DSSI buses, each with three drives connected to it.
The SF7x series storage enclosure holds either two or four RF7x series ISEs
(Figure 1–4). The ISEs in the SF7x storage enclosure can also be configured
in split-bus or through-bus mode. In through-bus mode, all four disk ISEs
are connected to a single DSSI bus. In split-bus mode, the left-side ISEs are
connected to one DSSI bus, while the right-side ISEs are connected to a second
DSSI bus.
The SF-series storage enclosures have the following features:
•

Both can operate in either through-bus or split-bus mode.

•

Each disk ISE has its own set of switches and indicators on the OCP.

•

The enclosure power supply provides operating power to all disk ISEs and
other subassemblies in the enclosure.

•

The drive dc power switches for the disk ISEs are on the front panel of the
storage enclosure.

Introduction 1–7

Introduction
1.2 Storage Enclosure Overview
Figure 1–3 SF3x Series Storage Enclosure

1
2
3 Fro

nt
4
5
6

ad
y
W
r
Pr ite
ot
ec
t
Fa
ul
t

1
2
3 Re

ar
4
5
6

A
B
C Fro

nt
D

E
F

A
B
C Re

ar
D
E
F

MA-0432-92.DG

1–8 Introduction

Introduction
1.2 Storage Enclosure Overview
Figure 1–4 SF7x Series Storage Enclosure

SHR_X1123C_89

Introduction 1–9

Introduction
1.2 Storage Enclosure Overview
Power requirements are shown in Table 1–4.
Table 1–4 Storage Enclosure Power Requirements
Storage Enclosure

Specification

SF3x disk power requirements
(steady state)

4.5 A at 100 to 120 Vac (60 Hz),
2.3 A at 220 to 240 Vac (50 Hz)

SF73 disk power requirements
(steady state)

4.7 A at 100 to 120 Vac (60 Hz),
2.4 A at 220 to 240 Vac (50 Hz)

TF857 tape magazine power requirements (steady state)

1.1 A at 100 to 120 Vac (60 Hz),
0.5 A at 220 to 240 Vac (50 Hz)

1–10 Introduction

2
TF8x7 Magazine Tape Subsystem
This chapter explains TF8x7 subsystem operation:
•

Power-on process

•

Mode Select key modes

•

Operator control panel (OCP) indicator functions

•

Slot Select, Load/Unload, and Eject button functions

•

Magazine cartridge insertion and removal

2.1 Power-On Process
When the TF8x7 subsystem powers on, all of the indicators on the operator
control panel (OCP) light, within 15 seconds. The power-on self-test, or POST,
is initializing the subsystem. When POST completes successfully, all OCP
indicators, including the Magazine Fault and Loader Fault indicators, turn
off—except for Power On.
Note
If the Magazine Fault or Loader Fault indicator remains on, POST has
detected an error. See Chapter 4 of the TF857 Series Magazine Tape
Subsystem Owner’s Manual for error conditions.
The elevator scans the magazine to determine which slots contain cartridges.
If the subsystem has a magazine with a cartridge in slot zero, and no cartridge
is in the drive, these indicators should be on:
Power On
Eject
Load/Unload
Slot Select
Slot 0

TF8x7 Magazine Tape Subsystem 2–1

TF8x7 Magazine Tape Subsystem
2.2 Mode Select Key

2.2 Mode Select Key
The Mode Select key (Figure 2–1) can lock the loader transfer assembly into
the enclosure, as well as lock the receiver closed. It has four modes: OCP
Disabled, Automatic, Manual, and Service. The OCP Disabled, Automatic, and
Manual modes are for operational use; the Service mode is for head cleaning
and servicing procedures.

2.2.1 Operating Modes
Use the following modes for operational use:
•

OCP Disabled mode—When the magazine is inserted into the receiver
and the receiver is closed, the loader transfer assembly scans the magazine.
The first cartridge in the magazine automatically loads into the drive.
Operations stop if you are copying data to tape and either the storage
capacity of the last tape cartridge is exceeded, or no tape cartridge is in the
next sequential slot in the magazine.
To lock the TF8x7 subsystem into the enclosure and lock the receiver, set
the Mode Select key to OCP Disabled mode. The OCP pushbuttons are
disabled.

•

Automatic mode—This mode is the default, or normal, mode of the TF8x7
subsystem. It automatically loads and unloads cartridges as necessary
during backup procedures. Operations stop if you are copying data to tape
and either the storage capacity of the last tape cartridge is exceeded, or no
tape cartridge is in the next sequential slot in the magazine.
To lock the TF8x7 subsystem into its normal operating position in the
enclosure but leave the receiver unlocked, set the Mode Select key to
Automatic mode. The receiver can be opened; all OCP pushbuttons are
enabled.

•

Manual mode—Automatic loading and unloading of cartridges does not
occur in this mode; rather, you must press the Load/Unload button to
move each cartridge. This mode is most useful for, but not restricted to,
copying specific files to or from tape. To lock the TF8x7 subsystem into
the enclosure, set the Mode Select key to Manual mode. The receiver is
unlocked and can be opened; all OCP pushbuttons are on.
Note
During Manual mode, the cartridge returns to the magazine, but the
current Slot Select indicator does not advance forward to the next
available cartridge.

2–2 TF8x7 Magazine Tape Subsystem

TF8x7 Magazine Tape Subsystem
2.2 Mode Select Key
Figure 2–1 TF8x7 Operator Control Panel
O PERAT O R CO NT RO L PANEL

Eject

Load/Unload

MOD E S E LE C T K E Y

BUTTON
AND
INDICATOR
AREA

Slot Select
OCP
DISABLED

0
AUTOMATIC
MODE

Power On

OCP LABEL
CURRENT
SLOT
INDICATORS
0-6

Write
Protected
Tape In Use

MANUAL
MODE

Use
Cleaning Tape

SERVICE
MODE

Magazine
Fault
Loader Fault

Eject

DSSI NODE
ID LABEL
(TF857 ONLY)

Load/Unload

Slot Select

0
Power On
Write
Protected

Write Protect
Load Fault

Tape In Use
Use
Cleaning Tape

Magazine
Fault
Loader Fault

5
4

40% REDUCTION

SHR_X1025E_91

TF8x7 Magazine Tape Subsystem 2–3

TF8x7 Magazine Tape Subsystem
2.2 Mode Select Key

2.2.2 Service Mode
Service mode is for performing head cleaning by manually loading the
CleaningTape III and for performing servicing procedures. See Chapter 5
of the TF857 Series Magazine Tape Subsystem Owner’s Manual for information
on head cleaning.
To unlock the TF8x7 subsystem from its enclosure and remove it from its
normal operating position, set the Mode Select key to Service mode. The
receiver is unlocked and can be opened.

2.3 Operator Control Panel
The TF8x7 operator control panel (OCP) has 3 OCP pushbuttons and 16
indicators that are used with the Mode Select key (Table 2–1). See Section 2.2
for information on the Mode Select key and its functions. See Section 2.4 for
more details on button and indicator operations.
Table 2–1 TF8x7 Operator Control Panel
Button/Indicator

Color

Function

Eject button

–

Opens the receiver, allowing access to the
magazine for removal and insertion of
cartridges. Also can be used to unload the
tape from the drive to the magazine.

Eject indicator

Green

Indicates a magazine fault, and that
you can press the Eject button to unload
cartridges from the drive to the magazine
and to open the receiver.

Load/Unload button

–

Loads the currently selected cartridge
into the tape drive. Unloads the cartridge
currently in the tape drive. Resets the
subsystem if there is a loader fault.

Load/Unload indicator

Green

Indicates that you can press the Load/Unload
button.

Slot Select button

–

Increments the current slot indicator to the
next slot.

Slot Select indicator

Green

Indicates that you can press the Slot Select
button. Pressing this button moves the
current slot indicator to the next slot.
Continued on next page

2–4 TF8x7 Magazine Tape Subsystem

TF8x7 Magazine Tape Subsystem
2.3 Operator Control Panel
Table 2–1 (Continued) TF8x7 Operator Control Panel
Button/Indicator

Color

Function

Power On indicator

Green

Indicates the TF8x7 magazine tape
subsystem is in a known good power state
(ac and dc voltages are within tolerance).

Write Protected indicator

Orange

When on, indicates that the cartridge
currently in the drive is write-protected by
one of these methods:
•

Setting the Write Protect switch to
write-protect

•

Using software write-protect qualifiers

•

Using a CompacTape or CompacTape II
cartridge previously written by another
drive

When off, indicates that the current
cartridge is write-enabled.
Tape In Use indicator

Yellow

Indicates tape drive activity as follows:
•

Slow blinking indicates tape is
rewinding.

•

Rapid blinking indicates tape is reading
or writing.

•

When on steadily, indicates that a
cartridge is in the drive and the tape is
not moving.

•

When off, indicates that no cartridge is
in the drive.

Use Cleaning Tape indicator

Orange

Indicates that the read/write head needs
cleaning.

Magazine Fault indicator

Red

Indicates a magazine failure.

Loader Fault indicator

Red

Indicates a loader transfer assembly error
or drive error.
Continued on next page

TF8x7 Magazine Tape Subsystem 2–5

TF8x7 Magazine Tape Subsystem
2.3 Operator Control Panel
Table 2–1 (Continued) TF8x7 Operator Control Panel
Button/Indicator

Color

Function

Current slot indicators 0–6

Green

Identifies the current slot (see Slot Select
button). Each current slot indicator blinks
when its corresponding cartridge moves
to or from the drive. Also used with the
Magazine Fault or Loader Fault indicator to
show the type of fault.

2.4 Slot Select, Load/Unload, and Eject Button Functions
The Slot Select, Load/Unload, and Eject buttons are OCP pushbuttons. They
contain a green indicator, and they are operable only when their corresponding
indicators are on.
Note
The Load/Unload button has three functions: load, unload, and reset.
If there is a loader fault and the Loader Fault indicator is on, press the
Load/Unload button to reset the TF8x7 subsystem.

2.4.1 Selecting a Cartridge
Use the Slot Select button to select a cartridge; press this button to
advance the slot indicator light to the next available slot. After a successful
initialization, the TF8x7 subsystem automatically selects slot 0 and the Slot
Select button becomes active. The Load/Unload and Eject indicators remain on
during the slot selection.

2.4.2 Loading the Cartridge
Press the Load/Unload button to load the cartridge into the drive. This action
causes the Select Slot, Load/Unload, and Eject indicators to turn off, and the
elevator to move to the selected slot, indicated by the light. The cartridge
is then removed from the magazine and placed in the elevator. The elevator
moves to the drive position and inserts the cartridge into the drive. The
indicators remain off until the tape has loaded to the beginning of the tape
(BOT). After the cartridge is loaded into the drive, the Eject and Load/Unload
indicators turn on, and the corresponding buttons are enabled. The Slot Select
indicator remains off.

2–6 TF8x7 Magazine Tape Subsystem

TF8x7 Magazine Tape Subsystem
2.4 Slot Select, Load/Unload, and Eject Button Functions

2.4.3 Unloading the Cartridge
Caution
Do not press the Load/Unload button until backup or other tape
operations are stopped at the terminal. Doing so can result in operation
failure and drive unavailability.

When you press the Load/Unload button, the Select Slot, Load/Unload, and
Eject indicators turn off, and the cartridge unloads from the drive into the
magazine. However, automatic operation now stops and the Select Slot
operation does not increment. The indicators turn on once the cartridge is
returned to the magazine.
The Load/Unload indicator must be on before you press the button to load or
unload a cartridge. If the Loader Fault indicator is on, showing a malfunction,
press the Load/Unload button to reset the subsystem and try to clear the error.

2.4.4 Opening the Receiver
The Eject button opens the receiver for insertion or removal of the magazine.
It is disabled when the Mode Select key is in the OCP Disabled position. The
Eject button can also be used to unload a tape from the drive.
Note
When a cartridge is not in the drive, the Slot Select, Load/Unload, and
Eject indicators are on before any operation begins. Pressing the Eject
button causes all indicators to turn off. The elevator then returns to its
home position and the receiver opens.
When a cartridge is in the drive, the Eject and Load/Unload indicators
are on before the operation begins. When you press the Eject button,
both indicators turn off, and the cartridge unloads from the drive and
moves back into the magazine. The receiver then opens to allow access
to the magazine.
In both situations, once the receiver is closed again, a magazine scan
begins, and the indicators turn back on when the scan is complete.

TF8x7 Magazine Tape Subsystem 2–7

TF8x7 Magazine Tape Subsystem
2.5 Magazine Cartridge Insertion and Removal

2.5 Magazine Cartridge Insertion and Removal
The front of the magazine has numbers (0 through 6) that indicate the number
of the slot.
Note
Insert and remove all cartridges at the front of the magazine.

2.5.1 Inserting a Cartridge into the Front of the Magazine
To simplify cartridge insertion, place the magazine on its back and facing you.
Each slot is numbered—to ensure that you are inserting the cartridge correctly
in the front of the magazine. Usually, cartridges are inserted into consecutive
slots.
To insert a cartridge into the magazine:
1. Grasp the cartridge with the CompacTape III label facing up and the Write
Protect switch facing you (Figure 2–2).
2. Set the cartridge’s Write Protect switch to the desired position. If you want
to write on the tape, slide the switch to the right (orange indicator is not
visible). If you want to write-protect the tape, slide the switch to the left
(orange indicator is visible).
3. Insert the cartridge (Figure 2–3) by pushing it into the slot until you hear
a click. A small metal tab holds the cartridge in place.

2–8 TF8x7 Magazine Tape Subsystem

TF8x7 Magazine Tape Subsystem
2.5 Magazine Cartridge Insertion and Removal
Figure 2–2 Write Protect Switch on a Cartridge

ORANGE
INDICATOR

p
om

I
pe

WRITEPROTECT
SWITCH

WRITEENABLED

WRITEPROTECTED
SHR_X1020C_89

TF8x7 Magazine Tape Subsystem 2–9

TF8x7 Magazine Tape Subsystem
2.5 Magazine Cartridge Insertion and Removal
Figure 2–3 Inserting a Cartridge into the Magazine
BACK OF
MAGAZINE

III

5
5

NOTE: Push tape in
until a click is heard

SLOT
NUMBERS
0-6

FRONT OF
MAGAZINE

SHR_X1021_89

2–10 TF8x7 Magazine Tape Subsystem

TF8x7 Magazine Tape Subsystem
2.5 Magazine Cartridge Insertion and Removal

2.5.2 Removing a Cartridge from the Magazine
To remove a cartridge from the magazine, press the cartridge (Figure 2–4) at
the front of the magazine until you hear a click; then, release. The slot uses a
spring-release action. When you press the cartridge in all the way, it pops out.
Caution
Never apply labels to the top or bottom of tape cartridges. Doing so
can cause cartridge jams in the TF8x7 subsystem. Use the space on
the front of the cartridge for labels. If a jam occurs, call your Digital
Services representative.

2.5.3 Removing the Magazine from the Receiver
To remove the magazine from the receiver, first be sure that:
1. The Power On indicator is on (Figure 2–1).
2. The tape drive is unloaded.
3. The Eject indicator is on. (It must be on before you can press the Eject
button.)
Then:
1. Press the Eject button (Figure 2–1) to open the receiver.
2. Grasp the receiver after it opens (Figure 2–5), and gently pull it forward to
access the magazine.
3. Grasp the magazine’s handle only to lift the magazine out of the receiver.

2.5.4 Installing the Magazine into the Receiver
To install the magazine into the receiver:
1. Slide the magazine down into the receiver (Figure 2–5) while holding the
magazine by the handle. Because the magazine is slotted, you can install
it only in the correct orientation.
2. Push the receiver closed.
3. Observe that the receiver is fully closed in the TF8x7 subsystem before
proceeding.

TF8x7 Magazine Tape Subsystem 2–11

TF8x7 Magazine Tape Subsystem
2.5 Magazine Cartridge Insertion and Removal
Figure 2–4 Removing a Cartridge from the Front of the Magazine
BACK OF
MAGAZINE

NOTE: Push tape in
until a click is heard

1
TM

4
4

5
5

SLOT
NUMBERS
0-6

FRONT OF
MAGAZINE

SHR_X1022_89

2–12 TF8x7 Magazine Tape Subsystem

TF8x7 Magazine Tape Subsystem
2.5 Magazine Cartridge Insertion and Removal
Figure 2–5 Receiver Opened

FRONT
BEZEL

Ejec

Loa

Slot

Pow

Wri

d/U

nloa

Sele

er O

te P

Tap

Driv

Loa

rote

e In

Use
Cle
anin

Use

g Ta

e Fa

d Fa

ult

SHR-X0046-90

TF8x7 Magazine Tape Subsystem 2–13

3
SF7x Series Storage Enclosure Operation
This chapter contains the following information:
•

A description of the various bus modes and system configurations in which
the storage enclosure functions

•

A description of all front and rear panel controls and indicators

•

Instructions on how to power up the storage enclosure

•

Instructions on how to bring the storage enclosure on and off line

3.1 Storage Enclosure Configurations
The storage enclosure is available with either two or four RF7x (1- or 2-GB)
disk ISEs installed. The two-ISE variant is referred to as –HE, and the
four-ISE variant is referred to as –JE.
SF7x series storage enclosures residing in SF400 DECarray cabinets can be
connected to a single system or to multiple systems in a DSSI VAXcluster
system configuration.
Either of these variants operate in one of two bus modes. These modes are
called through-bus and split-bus, and are described in the sections that follow.

3.1.1 Through-Bus Mode
In through-bus mode, all four disk ISEs in the storage enclosure operate on
or are part of the same DSSI bus. The DSSI bus enters the enclosure from
the rear, at the rightmost DSSI connector. The DSSI bus is then connected
to the left rear disk ISE (facing the front of the enclosure), then the left front
disk ISE, the right front disk ISE, then the right rear disk ISE, and finally out
the leftmost (facing rear again) DSSI connector. At this point, the DSSI bus
is either terminated (with a DSSI terminator, part number 12–31281–01) or
connected to another storage enclosure (operating in split-bus mode in a single
system or stripe set configuration).

SF7x Series Storage Enclosure Operation 3–1

SF7x Series Storage Enclosure Operation
3.1 Storage Enclosure Configurations
Figure 3–1 shows a typical VAX 6000/7000 system and DECarray DSSI bus,
with DSSI ID numbers.
Figure 3–1 Through-Bus Mode

SF72-JK (THROUGH-BUS)

TAPE
ISE
0

DISK
ISE
1

HOST
SYSTEM 1

DISK
ISE
2

DISK
ISE
3

DISK
ISE
4

TTM

KFMSA
7
DSSI BUS 0

DSSI
TERMINATOR

SHR-X0110-90

The –HE variant operates in through-bus mode, in a similar fashion, but only
the rear two disk ISEs are used. An SF7x–UK upgrade kit consisting of two
RF7x disk ISEs can be added at any time.

3.1.2 Split-Bus Mode
In split-bus mode, two disk ISEs in the storage enclosure operate on or are
part of two separate DSSI buses. The DSSI bus enters the enclosure from the
rear, at the leftmost or rightmost DSSI connector.
The DSSI bus for the left half of the enclosure is connected to the left rear disk
ISE (facing the front of the enclosure), then the left front disk ISE, and finally
terminated at the transition termination module (TTM) for the left half of the
enclosure.
The DSSI bus for the right half of the enclosure is connected to the right rear
disk ISE (facing the front of the enclosure), then the right front disk ISE, and
finally terminated at the TTM for the right half of the enclosure.
Figure 3–2 shows a typical VAX 6000/7000 system and DECarray DSSI bus,
with DSSI ID numbers.

3–2 SF7x Series Storage Enclosure Operation

SF7x Series Storage Enclosure Operation
3.1 Storage Enclosure Configurations
NOTE
Split-bus mode is not supported in DSSI VAXcluster system
configurations.

Figure 3–2 Split-Bus Mode
SF72-JK (THROUGH-BUS)

TAPE
ISE
0

DISK
ISE
1

DISK
ISE
2

HOST
SYSTEM 1

DISK
ISE
3

SF72-JK (SPLIT-BUS)

DISK
ISE
4

DISK
ISE
5

TTM

DISK
ISE
6

TTM

KFMSA
7
DSSI BUS 0
SHR-X0111-90

The –HE variant operates in split-bus mode, in a similar fashion, but only the
rear two disk ISEs are used. An SF7x–UK upgrade kit consisting of two RF7x
disk ISEs can be added to an –HE at any time.

3.2 Front Panel Controls, Labels, and Indicators
Figure 3–3 shows a front view of the storage enclosure. The operator control
panel (OCP) is on the top front of the enclosure. It can be accessed without
opening the cabinet’s front door.
The drive dc power switches are on the lower front of the enclosure. These
switches are not accessible when the front door of the cabinet is closed.
Table 3–1 briefly describes the functions of the front panel controls and
indicators. Details are contained in the sections that follow.

3.2.1 Operator Control Panel (OCP)
The operator control panel (OCP) contains four identical sets of controls and
indicators, and two additional indicators behind the front door of the panel.
Unless a disk ISE is installed in the enclosure and power is applied to that disk
ISE, the controls and indicators are nonoperational. Table 3–1 summarizes the
controls and indicators discussed in the following sections.

SF7x Series Storage Enclosure Operation 3–3

SF7x Series Storage Enclosure Operation
3.2 Front Panel Controls, Labels, and Indicators
Figure 3–3 Front View of the Storage Enclosure
OPERATOR CONTROL PANEL (OCP)

digi tal

Write
Ready Protect Fault

DSSI
ID

Write
Ready Protect Fault

FRONT COVER
CAPTIVE SCREWS

FRONT COVER
DOOR

ENCLOSURE
CAPTIVE SCREWS

DRIVE DC POWER SWITCHES

SHR-X0126A-90

Note
Figures may appear slightly different than actual SF7x storage
enclosures.

3–4 SF7x Series Storage Enclosure Operation

SF7x Series Storage Enclosure Operation
3.2 Front Panel Controls, Labels, and Indicators
Table 3–1 Summary of Front Panel Control/Indicator Functions
Control/Indicator

Function

Operator Control Panel
TERM PWR indicator

Indicates when termination power is being
supplied

SPLIT indicator

Indicates when enclosure is in split-bus
mode

MSCP enable switch

Enables or disables the disk ISE (leftmost
bit)

DSSI ID select switch

Enables DSSI ID numbers (rightmost bits)

Seven-segment LED displays

Displays disk ISE DSSI ID number

Ready button

Brings disk ISE on line (Green LED lights
when ready.)

Write Protect button

Places disk ISE in write-protect mode
(yellow LED lights when disk ISE is writeprotected.)

Fault button

Indicates a disk ISE fault (when red LED is
lit). Press once to display fault code, twice
to clear fault.

Lower Front
Drive dc power switches

Applies power to disk ISEs; shows power
status

The icons on the door of the OCP represent each disk ISE, as follows:
•

The icon in the top left front represents the disk ISE in the left rear of the
storage enclosure.

•

The icon in the top right front represents the disk ISE in the right rear of
the storage enclosure.

•

The icon in the bottom left front represents the disk ISE in the left front of
the storage enclosure.

•

The icon in the bottom right front represents the disk ISE in the right front
of the storage enclosure.

Colored labels on the inside of the door on the OCP help identify each of the
DSSI buses. Typically, in a single system or stripe set configuration, colors
represent the following buses:
•

Blue represents DSSI bus 1 (single system and stripe set)

•

Red represents DSSI bus 2 (single system and stripe set)
SF7x Series Storage Enclosure Operation 3–5

SF7x Series Storage Enclosure Operation
3.2 Front Panel Controls, Labels, and Indicators
•

Yellow represents DSSI bus 3 (single system)

•

Green represents DSSI bus 4 (single system)

Typically, in a DSSI VAXcluster system configuration, colors represent the
following buses:
•

Blue represents DSSI bus 1

•

Red represents DSSI bus 2

•

Yellow represents DSSI bus 3

•

Green represents DSSI bus 4

•

Blue and/or white represents DSSI bus 5

•

Red and/or white represents DSSI bus 6

Refer to the inside cover of the SF Family Label Booklet for further details.
The two indicators behind the OCP door are TERM PWR (termination power,
top) and SPLIT (bus mode, bottom). The TERM PWR indicator lights green
whenever the storage enclosure is connected to a DSSI bus. The SPLIT
indicator lights green only when the enclosure is operating in split-bus mode,
as described in Section 3.1.2.
Four switchpacks, one for each of the four disk ISEs, are located to the right
and left of the two indicators behind the OCP door (Figure 3–4). The switch to
the left is the MSCP enable switch and is in the down position when MSCP is
enabled. The other switches are used to set the DSSI ID number, where the
rightmost switch is the least significant. Typical switch settings are shown in
Tables 3–2 and 3–3.

3–6 SF7x Series Storage Enclosure Operation

SF7x Series Storage Enclosure Operation
3.2 Front Panel Controls, Labels, and Indicators
Figure 3–4 OCP Switchpacks

digi tal

Write
Ready Protect Fault

DSSI
ID

Write
Ready Protect Fault

SHR_X1128B_89

SF7x Series Storage Enclosure Operation 3–7

SF7x Series Storage Enclosure Operation
3.2 Front Panel Controls, Labels, and Indicators
Table 3–2 DSSI ID Switch Settings (Single System and Stripe Sets)
Disk ISE

DSSI ID

Setting1

1
2
3
4

0001
0010
0011
0100

5
6
6
5

0101
0110
0110
0101

1
2
2
1

0000
0001
0001
0000

Positions 1, 2, 4, and 7
Left rear (LR)
Left front (LF)
Right front (RF)
Right rear (RR)
Positions 3 and 8
Left rear (LR)
Left front (LF)
Right front (RF)
Right rear (RR)
Stripe Set (All Positions)
Left rear (LR)
Left front (LF)
Right front (RF)
Right rear (RR)
1 0 = down, 1 = up.

Table 3–3 DSSI ID Switch Settings (DSSI VAXcluster System)
Disk ISE

DSSI ID

Setting1

1
2
3
4

0001
0010
0011
0100

Positions 1, 2, 3, 4, 7, and 8
Left rear (LR)
Left front (LF)
Right front (RF)
Right rear (RR)
1 0 = down, 1 = up.

The four seven-segment LED displays on the front of the OCP display these
DSSI ID numbers. If a display indicator is not lit, then that disk ISE position
in the enclosure is not occupied by a disk ISE.

3–8 SF7x Series Storage Enclosure Operation

SF7x Series Storage Enclosure Operation
3.2 Front Panel Controls, Labels, and Indicators
The three disk ISE controls and indicators are to the right or left side of the
seven-segment LED displays. These controls, with their associated indicators,
are as follows (Figure 3–5):
•

Ready—The Ready button is a push-to-set switch with a green indicator.
When pressed in, the Ready button causes the disk ISE to come on line.
After the Ready button is pressed, it takes approximately 60 seconds for
the disk ISE to come on line. The green indicator remains lit while the
disk ISE is on line. However, this indicator may blink or go out entirely
when the disk ISE is performing heavy seeks.

•

Write Protect—The Write Protect button is a push-to-set switch with a
yellow indicator. When the Write Protect button is engaged, the data on
that disk ISE cannot be overwritten, nor can any new data be written to
that disk ISE.

•

Fault—The Fault button is a momentary switch with a red indicator. A
disk ISE fault is indicated when the red indicator is lit. Press the Fault
button once to display the disk ISE fault code, and a second time to clear
the fault code and to clear the disk ISE fault.

Figure 3–5 Controls and Indicators

digi tal

Write
Ready Protect Fault

DSSI
ID

Write
Ready Protect Fault

SHR_X1128_89

3.2.2 Drive DC Power Switches
Four drive dc power switches are on the lower front side of the storage
enclosure. Each drive dc power switch is associated with a disk ISE position,
as shown in Figure 3–3.

SF7x Series Storage Enclosure Operation 3–9

SF7x Series Storage Enclosure Operation
3.2 Front Panel Controls, Labels, and Indicators
An indicator in each drive dc power switch illuminates to show that nominal
power is being applied to the associated disk ISE. The switches are shown on
the icon located on the front of the storage enclosure’s chassis.
Setting a drive dc power switch connects power to the associated disk ISE and
causes the disk ISE to spin up and run a self-test. After setting the drive dc
power switch, you must press the Ready button on the OCP to bring the disk
ISE on line.

3.3 Rear Panel Controls and Indicators
Figure 3–6 shows the rear panel of the storage enclosure. The DSSI connectors
are on the top rear side of the enclosure. The ac power switch, line voltage
selector switch, and power supply fault indicator are on the bottom rear of the
enclosure, on the power supply chassis, as shown in Figure 3–6. These controls
and indicators affect operation of the entire storage enclosure.
Table 3–4 summarizes the functions of the rear panel controls and indicators.
Details are provided in the section that follows.
Table 3–4 Summary of Rear Panel Control/Indicator Functions
Control/Indicator

Function

Power Supply Chassis
AC power switch

Applies line voltage to dc power supply

Line voltage
selector switch

Selects between 120 Vac (60 Hz) and 240
Vac (50 Hz) line voltage

Power supply
fault indicator

Illuminates for fault or overtemperature in
enclosure

3–10 SF7x Series Storage Enclosure Operation

SF7x Series Storage Enclosure Operation
3.3 Rear Panel Controls and Indicators
Figure 3–6 Rear Panel of the Storage Enclosure

DSSI
CONNECTORS

1 0

AC RECEPTACLE

POWER SUPPLY
FAULT INDICATOR
(BEHIND PANEL)

230

115

FAULT

LINE VOLTAGE
SELECTOR SWITCH
(BEHIND PANEL)

AC POWER
SWITCH

SHR-X0127A-90

WARNING
Hazardous voltages are present inside the equipment cabinet and the
storage enclosure. Installation and service must be performed only by
qualified Digital Multivendor Customer Services engineers.

SF7x Series Storage Enclosure Operation 3–11

SF7x Series Storage Enclosure Operation
3.3 Rear Panel Controls and Indicators
The ac power switch for the storage enclosure is in the center of the rear panel.
Setting the ac power switch in the on (1) position applies power to the storage
enclosure. Setting the switch in the off (0) position removes power from the
enclosure.
As you face the rear panel, the line voltage selector switch is located to the
right of the ac power switch. It is visible through a hole in the rear panel.
The Digital Multivendor Customer Services engineer sets this switch to the
available line voltage during installation. The number ‘‘120’’ represents 120
Vac at 60 Hz, and the number ‘‘240’’ represents 240 Vac at 50 Hz.
CAUTION
The storage enclosure power supply is universal for both 120 Vac and
240 Vac. The supply is factory-set to 240 Vac and must be reset to 120
Vac for some installations. Selecting 120 Vac and using 240 Vac will
damage the power supply.

The power supply fault indicator is behind the panel in the lower right corner
of the storage enclosure. When the fault indicator is lit, a green light is visible
through the holes in the rear panel. The storage enclosure automatically shuts
down when the dc power supply detects a fault or overtemperature condition.

3.4 Applying Power to the Enclosure
This section describes the procedure for powering up a storage enclosure.
Perform all steps in the order in which they are presented.
Note
Do not change the DSSI ID setting while the power is on.

Apply power to the enclosure as follows:
1. Verify that the drive dc power switches and all disk ISE control buttons on
the front of the enclosure are in the off (0) position.
2. Set the ac power switch to the on (1) position to apply ac power to the dc
power supply.

3–12 SF7x Series Storage Enclosure Operation

SF7x Series Storage Enclosure Operation
3.4 Applying Power to the Enclosure
3. Verify that the power is on by checking that the fan starts and there is
normal airflow through the enclosure.
Note
It is possible to have airflow through the enclosure and not have output
voltage. This indicates that the line voltage selector switch, located
behind the rear panel of the enclosure, is in the wrong position.
Set the ac power switch to off (0) and reset the line voltage selector
switch.

4. Verify that the termination power indicator is on.
5. If the storage enclosure is in the split-bus mode, verify that the bus mode
indicator is on.
6. Turn the drive dc power switch on. Verify that the green indicator is lit.

3.5 Placing a Disk ISE On Line
After power is applied to the storage enclosure, use the following procedure
to place a disk ISE on line. Perform all steps in the order in which they are
presented.
1. Press the Ready button on the OCP to bring the ISE on line.
a. The Ready indicator flickers while the disk ISE is spinning up. If you
power up a disk ISE with the Ready button for that disk ISE in the on
(in) position, you must press the Ready button to put it in its off (out)
position momentarily, then press the button in to bring the disk ISE on
line correctly.
b. All other indicators remain off.
c.

When the disk ISE has completed spinup, the Ready indicator
illuminates, indicating that the disk ISE is ready for read/write
operation.

d. The Fault indicator illuminates if the disk ISE detects a fault.
2. Press the Write Protect button on the OCP, as required, to turn on writeprotect mode. To deselect write-protect mode, press this button a second
time.

SF7x Series Storage Enclosure Operation 3–13

SF7x Series Storage Enclosure Operation
3.5 Placing a Disk ISE On Line
Repeat this entire procedure for each disk ISE being placed on line.
Note
The Ready indicator remains lit during normal operation, though it
may flicker during heavy seeks.
The Write Protect indicator is lit when the disk ISE is write-protected,
and off when the disk ISE is write-enabled.

3.6 Taking a Disk ISE Off Line
To take a disk ISE off line, press the Ready button (out position) and wait until
the LED goes out.

3–14 SF7x Series Storage Enclosure Operation

4
SF3x Series Storage Enclosure
This chapter contains the following information:
•

An overview of the SF3x storage enclosure

•

A description of all front and rear panel controls and indicators

•

Instructions on how to power up the storage enclosure

•

Instructions on how to bring the storage enclosure on and off line

4.1 SF3x Overview
The SF3x storage enclosure comes with either six or twelve half-height, 3
1/2-inch form factor disk ISEs. They are arranged on two DSSI buses, one
for the front six ISEs and one for the rear six ISEs. These can be further
divided into four DSSI buses, each with three ISEs by configuring the storage
enclosure in split-bus mode, as described in the next section.
Ease ISE slides into a slot in the enclosure, where it plugs directly into a
backplane. There is one backplane for the front six ISEs and one backplane for
the rear six ISEs. The location of an ISE within the backplane determines its
DSSI node ID, as follows:
DSSI node ID 1—Upper left slot
DSSI node ID 2—Upper right slot
DSSI node ID 3—Middle left slot
DSSI node ID 4—Middle right slot
DSSI node ID 5—Lower left slot
DSSI node ID 6—Lower right slot

SF3x Series Storage Enclosure 4–1

SF3x Series Storage Enclosure
4.1 SF3x Overview
SF3x series storage enclosures can be connected to a single system, or they can
be connected to multiple systems in a DSSI VAXcluster configuration. It can
operate in one of two bus modes, through-bus or split-bus mode. These nodes
are described in the sections that follow.

4.1.1 Through-Bus Mode
In through-bus mode, all six ISEs in each half of the storage enclosure are
connected to the same DSSI bus. The DSSI bus enters through the left DSSI
connector on the top of the backplane, connects to ISEs 1, 3, and 5 on the left
side of the enclosure, then goes through ISEs 6, 4, and 2, and finally out the
right DSSI connector (Figure 4–1).
At this point, the DSSI bus is either terminated (with a DSSI terminator, part
number 12–31281-01), connected to a magazine tape ISE, or connected to the
DECarray I/O panel.

4–2 SF3x Series Storage Enclosure

SF3x Series Storage Enclosure
4.1 SF3x Overview
Figure 4–1 Through-Bus Mode
DSSI
Terminator

Host
System
DSSI
Adapter

DSSI Bus

Disk
Slot A

Disk
Slot B

Disk
Slot C

Disk
Slot D

Disk
Slot E

Disk
Slot F

MKV−010000437−01−92−RAGS

SF3x Series Storage Enclosure 4–3

SF3x Series Storage Enclosure
4.1 SF3x Overview

4.1.2 Split-Bus Mode
Each set of six ISEs (front and rear) can be further separated by putting the
left ISEs (DSSI nodes 1, 3, and 5) and right ISEs (DSSI nodes 2, 4, and 6)
on separate DSSI buses. This configuration leaves each enclosure with four
distinct DSSI buses, each with three disk ISEs (Figure 4–2).
This configuration is most often used when the DECarray is configured in
stripe sets.
Figure 4–2 Split-Bus Mode
DSSI Bus

Host
System

Disk
Slot A

Disk
Slot B

Disk
Slot C

Disk
Slot D

Disk
Slot E

Disk
Slot F

DSSI
Terminator

DSSI
Adapter
DSSI Bus

MKV−010000437−02−92−RAGS

4–4 SF3x Series Storage Enclosure

SF3x Series Storage Enclosure
4.2 Front Panel Controls, Labels, and Indicators

4.2 Front Panel Controls, Labels, and Indicators
Figure 4–3 shows a front view of the storage enclosure. The operator control
panel (OCP) is on the top front of the enclosure. It can be accessed without
opening the cabinet front door.
The dc power switches for each ISE are on the bottom front of the enclosure.
These switches are not accessible with the front door of the cabinet is closed.
Note
Figures may appear slightly different than actual SF3x storage
enclosures.

SF3x Series Storage Enclosure 4–5

SF3x Series Storage Enclosure
4.2 Front Panel Controls, Labels, and Indicators
Figure 4–3 Front View of the SF3x Storage Enclosure
Operator Control Panel

Front
2 3 4 5

2 3

Rear
4 5

DC Power
Switches
Front
1 23 4 5 6

Rear
1 23 4 5 6

MKV−010000437−03−92−rags

4–6 SF3x Series Storage Enclosure

SF3x Series Storage Enclosure
4.2 Front Panel Controls, Labels, and Indicators

4.2.1 Operator Control Panel
The OCP contains two identical sets of controls and indicators, one set for the
front ISEs and one set for the rear. Each set consists of switches and LEDs for
six ISEs, one for each slot in that side of the storage enclosure. Unless a disk
ISE is installed and power is applied to a given slot, the corresponding controls
and indicators are nonoperational.
Table 4–1 summarizes the function of the controls and indicators provided for
each ISE in the storage enclosure.
Table 4–1 Operator Control Panel Functions
Control/Indicator

Function

Ready switch

The Ready switch is a push-to-set switch with a
green indicator. When pressed in, the Ready switch
causes the disk ISE to come on line. After the
Ready switch is pressed, it takes approximately
60 seconds for the disk ISE to come on line. The
green indicator remains lit while the disk ISE is
on line. However, this indicator may flicker or go
out entirely when the disk ISE is performing heavy
seeks.

Write Protect switch

The Write Protect switch is a push-to-set switch
with an amber indicator. When the Write Protect
switch is engaged, the data on that disk ISE cannot
be overwritten, nor can any new data be written to
that disk ISE.

MSCP switch/Fault indicator

The MSCP/Fault switch is a recessed switch with
a multicolor indicator. During normal operation,
this LED is unlit. If the MSCP switch is pressed
and MSCP is disabled, this LET is lit green. If the
system detects a fault in the ISE, this LED is lit
red. If a fault is detected while MSCP is disabled,
this LED is lit amber.

SF3x Series Storage Enclosure 4–7

SF3x Series Storage Enclosure
4.2 Front Panel Controls, Labels, and Indicators

4.2.2 DC Power Switches
Power switches for each ISE in the enclosure are on the lower front side of the
storage enclosure. The left six switches are for the front six ISEs and the right
six switches are for the rear six ISEs. Each power switch is associated with a
disk ISE position, as shown in Figure 4–3.
An indicator in each drive dc power switch illuminates to show that nominal
power is being applied to the associated disk ISE.
Pressing a dc power switch connects power to the associated disk ISE and
causes the disk ISE to spin up and run a self-test. After setting the drive dc
power switch, you must press the Ready button on the OCP to bring the disk
ISE on line.
When power is initially applied to the storage enclosure, the power is initially
applied to the rear six ISEs first, then after a 15-second delay, power is applied
to the front six ISEs.

4.3 Rear Panel Controls and Indicators
Figure 4–4 shows the rear panel of the storage enclosure. The DSSI connectors
are on the top rear side of the enclosure. The ac power switch, line voltage
selector switch, and power supply fault indicator are on the bottom rear of the
enclosure, on the power chassis, as shown in Figure 4–4. These controls and
indicators affect operation of the entire storage enclosure.
Table 4–2 summarizes the functions of the rear panel controls and indicators.
Details are provided in the paragraphs that follow.
Table 4–2 Summary of Rear Panel Control/Indicator Functions
Control/Indicator

Function

Power Supply Chassis
AC power switch

Applies line voltage to dc power supply.

Line voltage
selector switch

Selects between 120 Vac (60 Hz) and
240 Vac (50 Hz) line voltage.

Power supply
fault indicator

Illuminates for fault or overtemperature
in enclosure.

4–8 SF3x Series Storage Enclosure

SF3x Series Storage Enclosure
4.3 Rear Panel Controls and Indicators
Figure 4–4 Rear Panel of the Storage Enclosure
DSSI
Connectors

F
Power Supply
Fault Indicator
(Behind Panel)
FAULT

AC Receptacle

AC Power
Switch

Line Voltage
Selected Switch
(Behind Panel)
MKV−010000437−04−92−rags

SF3x Series Storage Enclosure 4–9

SF3x Series Storage Enclosure
4.3 Rear Panel Controls and Indicators
Warning
Hazardous voltages are present inside the equipment cabinet and the
storage enclosure. Installation and service must be performed only by
qualified Digital Services engineers.

The ac power switch for the storage enclosure is in the center of the rear panel.
Setting the ac power switch in the position labeled ‘‘1’’ applies power to the
storage enclosure. Setting the switch in the position labeled ‘‘0’’ removes power
from the enclosure.
As you face the rear panel, the line voltage selector switch is located to the
right of the ac power switch. It is visible through a hole in the rear panel. The
Digital Services engineer sets this switch to the available line voltage during
installation. The number ‘‘120’’ represents 120 Vac at 60 Hz, and the number
‘‘240’’ represents 240 Vac at 50 Hz.
Caution
The storage enclosure power supply is universal for both 120 Vac and
240 Vac. The supply is factory set to 240 Vac and must be reset to 120
Vac for some installations. Selecting 120 Vac and using 240 Vac will
damage the power supply.

The power supply fault indicator is behind the panel, in the lower right corner
of the storage enclosure. When the fault indicator is lit, a green light is visible
through the holes in the rear panel. The storage enclosure automatically shuts
down when the dc power supply detects a fault or overtemperature condition.

4–10 SF3x Series Storage Enclosure

SF3x Series Storage Enclosure
4.4 Applying Power to the Enclosure

4.4 Applying Power to the Enclosure
This section describes the correct procedure for powering up a storage
enclosure. Perform all steps in the order in which they are presented.
Apply power to the enclosure as follows:
1. Verify that the drive dc power switches and all disk ISE control buttons on
the front of the enclosure are in the off (0) position.
2. Set the ac power switch to the on (1) position to apply ac power to the dc
power supply.
3. Verify that the power is on by checking that the fan starts and there is
normal airflow through the enclosure.
Note
It is possible to have airflow through the enclosure and not have output
voltage. This indicates that the line voltage selector switch, located
behind the rear panel of the enclosure, is in the wrong position.
Set the ac power switch to off (0) and reset the line voltage selector
switch.

4. Verify that the green indicators on the dc power switches illuminate for the
rear six ISEs (right six buttons on the front of the enclosure). Then, after
15 seconds, the dc power switches for the front six ISEs illuminate.

SF3x Series Storage Enclosure 4–11

SF3x Series Storage Enclosure
4.5 Placing a Disk On Line

4.5 Placing a Disk On Line
After power is applied to the storage enclosure, use the following procedure
to place a disk ISE on line. Perform all steps in the order in which they are
presented.
1. Press the Ready button on the OCP to bring the ISE on line.
a. The Ready indicator flickers while the disk ISE is spinning up. If you
power up a disk ISE with the Ready button for that disk ISE in the on
(in) position, you must press the Ready button to put it in its off (out)
position momentarily, then press the button in to bring the disk ISE on
line correctly.
b. All other indicators remain off.
c.

When the disk ISE has completed spinup, the Ready indicator
illuminates, indicating that the disk ISE is ready for read/write
operation.

d. The fault indicator illuminates if the disk ISE detects a fault.
2. Press the Write Protect button on the OCP, as required, to turn on writeprotect mode. To deselect write-protect mode, press this button a second
time.
Repeat this entire procedure for each disk ISE being placed on line.
Note
The Ready indicator remains lit during normal operation, though it
may flicker during heavy seeks.
The Write Protect indicator is lit when the disk ISE is write-protected,
and off when the disk ISE is write-enabled.

4.6 Taking a Disk Off Line
To take a disk ISE off line, press the Ready button (out position) and wait until
the LED goes out.

4–12 SF3x Series Storage Enclosure

A
DECarray Configuration Sheets
This appendix contains blank configuration sheets to help you plan your
configuration.
Figures A–1, A–2, and A–3 are to be used with systems containing variants of
the KFMSA adapter module. Figures A–4 and A–5 are to be used with systems
containing either KFQSA adapter modules or embedded DSSI adapters.

DECarray Configuration Sheets A–1

DECarray Configuration Sheets

Figure A–1 Single System Configuration Sheet (Dual Port)
KFMSA/Single−System Configuration Sheet
[for VAX 6000 and 9000 systems]
KFMSA XMI Node #
Bus
DSSI ID #

Bus
DSSI ID #

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Color Code

Color Code
config_shr−x0109.rags

A–2 DECarray Configuration Sheets

DECarray Configuration Sheets

Figure A–2 Two-Host DSSI VAXcluster System Configuration Sheet (Dual
Port)

KFMSA/DSSI VAXcluster Configuration Sheet
[for VAX 6000 and 9000 systems]
KFMSA XMI Node #
Bus
DSSI ID #

Bus
DSSI ID #

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

KFMSA XMI Node #
Bus
DSSI ID #

Color Code

Bus
DSSI ID #

Color Code
config_shr−x0133.rags

DECarray Configuration Sheets A–3

DECarray Configuration Sheets

Figure A–3 Three-Host DSSI VAXcluster System Configuration Sheet (Dual
Port)

KFMSA/DSSI VAXcluster Configuration Sheet
[for VAX 6000 and 9000 systems]
KFMSA XMI Node #
Bus
DSSI ID #

Bus
DSSI ID #
KFMSA XMI Node #

Bus
DSSI ID #

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

KFMSA XMI Node #
Bus
DSSI ID #

Color Code

Bus
DSSI ID #

Color Code
config_shr−x0133b.rags

A–4 DECarray Configuration Sheets

DECarray Configuration Sheets

Figure A–4 Single System Configuration Sheet (Single Port)

DSSI Single−System Configuration Sheet
[for MicroVAX II, MicroVAX/VAXserver 3xxx (Q−bus), and VAX 4000 systems]
DSSI ADAPTER
Bus
DSSI ID #

Device Type
DSSI ID #
Node Name
System ID
Device Type
DSSI ID #
Node Name
System ID
Device Type
DSSI ID #
Node Name
System ID
Device Type
DSSI ID #
Node Name
System ID
Device Type
DSSI ID #
Node Name
System ID
Device Type
DSSI ID #
Node Name
System ID
Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS

Array Pos. #
UNITNUM

ALLO_CLASS

Array Pos. #
UNITNUM

ALLO_CLASS

Array Pos. #
UNITNUM

ALLO_CLASS

Array Pos. #
UNITNUM

ALLO_CLASS

Array Pos. #
UNITNUM

ALLO_CLASS

Array Pos. #
UNITNUM

ALLO_CLASS
SF200 Box #
UNITNUM

Color Code
config_single.rags

DECarray Configuration Sheets A–5

DECarray Configuration Sheets

Figure A–5 DSSI VAXcluster System Configuration Sheet (Single Port)

DSSI VAXcluster Configuration Sheet
[for MicroVAX II, MicroVAX/VAXserver 3xxx (Q−bus), and VAX 4000 systems]
DSSI ADAPTER
Bus
DSSI ID #

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

Device Type
DSSI ID #
Node Name
System ID

ALLO_CLASS
Array Pos. #
UNITNUM

DSSI ADAPTER
Bus
DSSI ID #
Color Code
config_double,rags

A–6 DECarray Configuration Sheets

Glossary
adapter
A module that connects one or more device controllers to the system bus
and hides many of the system bus requirements from the controller. The
KFQSA module is a Q-bus-to-DSSI bus adapter. The KFMSA module is an
XMI-to-DSSI bus adapter.
allocation class
A numerical value assigned to the ISE to indicate which system(s) on a cluster
it will be served by.
block
The smallest data unit addressable on a disk, also called a sector. In DSSI
ISEs, a block contains 512 bytes of customer data, EDC, ECC, flags, and the
block’s address header.
DECarray
A storage array that houses up to six storage enclosures and up to two
magazine tapes (such as the TF857 storage array).
device name
A unique name given to each device by the VMS operating system. The device
name generally includes either the allocation class and MSCP unit number
assigned to the device (if the allocation class is not zero), or the node name and
MSCP unit number (if the allocation class is zero).
DRVTST
A local program resident on the ISE. It is a comprehensive hardware test used
to verify ISE operation.

Glossary–1

DSSI
Digital Storage System Interconnect. A DSA-based storage interconnect used
by the KFMSA adapter and the RF- and TF-series integrated storage elements
to transfer data and to communicate with each other.
DSSI VAXcluster system
Storage configuration where DSSI ISEs are shared between two DSSI adapters
and systems.
DUP
Diagnostic and utility protocol. A SYSAP-level protocol by which a computer
directs a storage device controller to run internal diagnostics or utility
functions. DUP is implemented as a class driver on the system side and a
corresponding class server on the storage controller side.
EEPROM
Electrically-erasable programmable read only memory. Used by the KFMSA
adapter to store configuration, manufacturing, and error information in a
nonvolatile location.
embedded adapter
An adapter that connects one or more device controllers to the system bus
(such as a VAX 4000 system) and hides many of the system bus requirements
from the controller. Refer to the system documentation for further information.
ISE
Integrated storage element. All DSSI storage devices are ISEs.
KFMSA
XMI bus to DSSI bus adapter.
KFQSA
Q-bus to DSSI bus adapter.
magazine tape
A DSSI tape ISE with tape loader, such as a TF857 storage array.
MDM
MicroVAX Diagnostic Monitor. Diagnostic tool for isolating problems in
systems running MicroVMS software.

Glossary–2

MSCP
Mass Storage Control Protocol. An application layer protocol used by the
system to perform disk I/O operations and I/O control functions.
node name
A six-character (maximum) value that is assigned to each DSSI ISE. The node
name of each ISE must be unique across the system topology.
OCP
Operator control panel. An enclosure interface that allows remote control of
DSSI node ID selection and ISE operating status.
PARAMS
A local program resident on the ISE. PARAMS is used to view and modify
current device parameter settings on an ISE.
Q-bus
The system bus for the MicroVAX II, MicroVAX/VAXserver 3xxx, and VAX 4000
series systems.
RF73
A 2-GB formatted capacity DSSI disk ISE.
RLL
Run length limited. The format used in the DSSI ISE to record data.
SF7x
A DSSI storage enclosure that houses either two or four RF-series disk ISEs.
single system
Storage configuration where DSSI ISEs are connected to only one DSSI
adapter and system.
split-bus
A mode of operation where the ISEs in the right side of a storage enclosure are
connected to a different DSSI bus than those on the left side. In this mode, the
DSSI buses are terminated by the TTM.

Glossary–3

stripe set
A set of disk drives operating in concert as a single virtual disk to provide
increased I/O performance. In a DSSI bus application, all SF7x storage
enclosures are in split-bus mode and each half of each enclosure is connected
to its own dedicated DSSI adapter port.
through-bus
A mode of operation where all the ISEs in a storage enclosure are connected
to the same DSSI bus. In this mode, the DSSI bus is terminated using an
external terminator.
TMSCP
Tape Mass Storage Control Protocol. Application layer protocol that is used by
the system to perform tape I/O operations and I/O control functions.
TTM
Transition termination module. A PC board that connects the storage enclosure
OCP and RF-series disk ISE, and also provides DSSI bus termination when in
split-bus mode.
unit number
Also called the MSCP/TMSCP unit number. Default value is the ISE’s DSSI
node ID. A unique value can be selected using PARAMS.
VAX Diagnostic Supervisor
A diagnostic environment that allows access to DSSI tests and programs in
VAX 6000 and 9000 series systems.
virtual circuit
A logical point-to-point link between nodes.
XMI
Extended Memory Interconnect. The system bus for the VAX 6000 and 9000
series systems.

Glossary–4

Index
A
AC power switch, 3–12
Automatic mode, 2–2

B
BACKUP command
Automatic mode, 2–2
Bus mode indicator, 3–6

DECarray (cont’d)
recommended environmental limits, 1–5
Drive dc power switches, 3–9
DSSI switchpacks, 3–6

E
Eject button, 2–6
cartridge in drive, 2–7
no cartridge in drive, 2–7
unload function, 2–4

Cartridge
inserting into magazine, 2–8
loading, 2–6
unloading, 2–7
Write Protect switch, 2–8
Colored labels
DSSI VAXcluster system, 3–6
single system and stripe set, 3–5
Configurations
See SF7x storage enclosure
Configuration sheets, DECarray, A–1
Controls and indicators
front panel, 3–3
rear panel, 3–10

Fault button, 3–9
Fault indicator
power supply, 3–12
Front panel
controls and indicators, 3–3

D
DECarray
configuration sheets, A–1
description of, 1–1
overview, 1–1

I
Icons, 3–5, 3–10
Indicators
See Controls and indicators

L
Labels
See Colored labels
Line voltage selector switch, 3–12
Load/Unload button, 2–6
reset function, 2–4

Index–1

enclosure ac, 3–10

M
Magazine, 2–8
removing from receiver, 2–11
restoring into receiver, 2–11
Manual mode, 2–2
Mode Select key
automatic mode, 2–2
description, 2–2
manual mode, 2–2
mode definitions, 2–2
OCP disabled mode, 2–2
Service mode, 2–4

O
OCP
controls and indicators, 3–3
seven-segment displays, 3–8
OCP disabled mode, 2–2
Operating modes, 2–2
Operating procedures, 2–1

P
POST, 2–1
Powering up, enclosure, 3–12
Power-on, 2–1
Power-on self-test
status of OCP indicators, 2–1
Power supply
fault indicator, 3–12
Power switches
drive dc, 3–9

Index–2

R
Ready button, 3–9
Rear panel
controls and indicators, 3–10
Receiver, 2–11
Reset
Load/Unload button, 2–4

S
Service mode
unlocking the TF8x7 subsystem, 2–4
SF7x storage enclosure
applying power, 3–12
configurations, 3–1
placing on line, 3–13
taking off line, 3–14
Slot Select button, 2–6
operation, 2–6
Split-bus mode, 3–2
Storage enclosure overview, 1–7

T
Termination power indicator, 3–6
Through-bus mode, 3–1

W
Write Protect button, 3–9
Write Protect switch, 2–8