DEC SA7x Manuale utente

SA7xEnclosure

UserGuide

Order Number: EK–OSA7X–UG. C01

This guide explains how to operate the SA7x family of enclosures: the

SA70, SA71, SA72, and SA73. This guide also includes installation

procedures that can be performed only by trained Digital Multivendor

Customer Services engineers.

Digital Equipment Corporation

Maynard, Massachusetts

October 1993

NOTE: This equipment generates, uses, and may emit radio frequency energy. The equipment has

been type tested and found to comply with the limits for a Class A digital device pursuant to Part

15 of the FCC rules. These limits are designed to provide reasonable protection against harmful

interference in a commercial installation. 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.

Any changes or modiﬁcations made to this equipment may void the user’s authority to operate the

equipment.

Operation of this equipment in a residential area may cause interference in which case the user,

at his own expense, will be required to take whatever measures may be required to correct the

interference.

WARNING

This is a Class A product. In a domestic environment, this product may cause radio interference in

which case the user may be required to take adequate measures.

While Digital believes the information included in this publication is correct as of the date of

publication, it is subject to change without notice.

Digital Equipment Corporation makes no representations that the interconnection of its products

in the manner described in this document will not infringe existing or future patent rights, nor

do the descriptions contained in this document imply the granting of licenses to make, use, or sell

equipment or software in accordance with the description.

©Digital Equipment Corporation 1991, 1992, 1993.

Printed in the United States of America.

DEC, DECsystem, DSA, DSDF, HSC, HSC50, HSC70, KDA, KDA50, KDB50, KDM, MicroVAX,

PDP-11, RA, SA, SDI, UDA, UNIBUS, VAX, VAXsimPLUS, and the DIGITAL logo are trademarks

of Digital Equipment Corporation.

Contents

Preface ............................................................ vii

1 Introducing the SA7x Enclosure

1.1 SA7xEnclosureOverview ..................................... 1–1

1.2 RA7x and SA7x Conﬁgurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6

1.3 SA7xSpeciﬁcations .......................................... 1–9

1.4 UserPrecautions ............................................ 1–10

1.4.1 DataRecovery ........................................... 1–10

1.4.2 Recommended Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . 1–11

1.4.3 Electrostatic Discharge Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–11

2 Operating the SA7x

2.1 SA7x Switches and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1

2.1.1 Using the Switches and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1

2.1.2 Using Drive Power Switches and Indicators . . . . . . . . . . . . . . . . . . . . 2–4

2.2 Using SA7x Rear Panel Switches and Indicator . . . . . . . . . . . . . . . . . . . . . 2–5

2.3 Applying Power to the SA7x Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6

2.4 Placing RA7x Drives On Line and Off Line . . . . . . . . . . . . . . . . . . . . . . . . 2–7

2.4.1 PlacingaDriveOnLine.................................... 2–7

2.4.2 TakingaDriveOffLine.................................... 2–8

3 Replacing RA7x Disk Drives

3.1 Installing and Removing an RA7x Disk Drive . . . . . . . . . . . . . . . . . . . . . . 3–2

3.1.1 Recording RA7x Disk Drive Serial Numbers . . . . . . . . . . . . . . . . . . . . 3–3

3.1.2 Reversing the RA70 Shoe Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–4

3.1.3 Installing an RA7x Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6

3.1.4 Removing an RA7x Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6

3.2 Installing and Removing a Drive Position Filler . . . . . . . . . . . . . . . . . . . . 3–8

4 Installing the SA7x

4.1 SA7xInstallationOverview.................................... 4–1

4.1.1 PowerandSafety......................................... 4–1

4.1.2 Recording Disk Drive Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . 4–1

4.2 Selecting Line Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2

4.3 Performing a Post-Installation Checkout and Power-Up . . . . . . . . . . . . . . 4–2

4.4 SettingDriveUnitNumbers ................................... 4–5

4.5 Installing an Add-On SA7x Enclosure in an SA900 Storage Array . . . . . . 4–6

4.5.1 General Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–6

4.6 Preparing the SA900 Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–9

4.7 Guide Rail Plate Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–11

iii

4.8 Left Position Guide Rail Plate Installation . . . . . . . . . . . . . . . . . . . . . . . . 4–11

4.9 Right Position Guide Rail Plate Installation . . . . . . . . . . . . . . . . . . . . . . . 4–13

4.10 Preparing the SA7X Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–14

4.11 Installing the SA7X Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–15

4.11.1 Completing the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–19

5 Troubleshooting the SA7x

5.1 IdentifyingProblems ......................................... 5–1

5.2 Troubleshooting a Dead Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1

5.2.1 If the Fault Indicator Is Lit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1

5.2.2 If the Fault Indicator Is Not Lit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2

5.3 Troubleshooting a Flashing Drive Power Indicator . . . . . . . . . . . . . . . . . . 5–3

5.4 Troubleshooting Excessive Drive Errors or a Fault Condition . . . . . . . . . . 5–5

5.5 ReadingOCPErrorCodes..................................... 5–5

5.6 Troubleshooting a Drive Not Visible to the Controller . . . . . . . . . . . . . . . . 5–6

5.7 TroubleshootingtheOCP...................................... 5–6

A Environmental Stabilization

B RA7x Error Rates

B.1 RA7xErrorRates............................................ B–1

C Revision Support

Index

Figures

1–1 SA7xEnclosure .......................................... 1–2

1–2 RA70DiskDrive ......................................... 1–3

1–3 RA71 Through RA73 Disk Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4

1–4 Using the ESD Grounding Strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–12

2–1 SA7xEnclosureFrontPanel ................................ 2–2

2–2 SA7xEnclosureRearPanel................................. 2–6

3–1 SA70Enclosure .......................................... 3–3

3–2 RA7x Disk Drive Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 3–4

3–3 Reversing the RA7x Shoe Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5

3–4 ReplacingRA70DiskDrive ................................. 3–7

4–1 SA7xEnclosureFrontPanel ................................ 4–4

4–2 Storage Device Add-On Sequence for the SA900 Storage Array (Front

View) .................................................. 4–7

4–3 SA7x Front Clamping Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–8

4–4 SA900 and SA7x Chassis Retaining Brackets . . . . . . . . . . . . . . . . . . . 4–9

4–5 SA7x Enclosure Guide Rail Assembly Installation . . . . . . . . . . . . . . . . 4–10

4–6 SA900MountingRailHoles................................. 4–12

4–7 Installing the SA7x Enclosure in the SA900 . . . . . . . . . . . . . . . . . . . . 4–16

4–8 SA900 SDI Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–18

4–9 SA900 Power Cords—SA7x Enclosures . . . . . . . . . . . . . . . . . . . . . . . . 4–20

5–1 SA7xEnclosureFrontPanel ................................ 5–4

Tables

1RelatedCourses.......................................... viii

2RelatedDocumentation .................................... viii

1–1 Authorized Disk Drive Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1

1–2 RA7x Fixed Disk Conﬁgurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6

1–3 SA7xConﬁgurations ...................................... 1–7

1–4 SA7x Enclosure Recommended Environmental Limits . . . . . . . . . . . . . 1–9

1–5 SA7x Enclosure Speciﬁcations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–9

2–1 SA7x Switch and Indicator Functions . . . . . . . . . . . . . . . . . . . . . . . . . 2–3

2–2 OCP Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4

2–3 Power Supply Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . 2–5

3–1 Authorized Disk Drives Installations . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1

4–1 RA7xDriveUnitNumbers ................................. 4–5

4–2 H9A00ExternalSDICables ................................ 4–17

5–1 SA7x Problems and Troubleshooting References . . . . . . . . . . . . . . . . . 5–1

A–1 Thermal Stabilization Speciﬁcations . . . . . . . . . . . . . . . . . . . . . . . . . . A–1

B–1 RA71-RA72 System Error Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–1

C–1 VAX Diagnostics for RA71–RA73 Drives . . . . . . . . . . . . . . . . . . . . . . . C–1

C–2 Retired VAX Supervisor Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–2

C–3 Operating Systems for RA71–RA73 Drives . . . . . . . . . . . . . . . . . . . . . C–2

C–4 SDI Controllers for RA71–RA73 Drives . . . . . . . . . . . . . . . . . . . . . . . . C–2

Preface

The SA7x Enclosure User Guide explains how to operate the SA7x family of

enclosures: the SA70, SA71, SA72, and SA73. The guide is intended for end

users, but it includes installation procedures that should be performed only by

trained Digital Multivendor Customer Services engineers.

The SA70, SA71, SA72, and SA73 enclosures are physically identical. They are

differentiated only by the RA7x disk drives they contain:

• The SA70 accommodates one to four RA70 disk drives (280 MB each).

• The SA71 accommodates one to four RA71 disk drives (700 MB each).

• The SA72 accommodates one to four RA72 disk drives (1 GB each).

• The SA73 accommodates one to four RA73 disk drives (2 GB each).

Conventions

Special terminology used in the publication includes:

•SA7x refers to the SA70, SA71, SA72, and SA73 enclosures collectively.

•RA7x refers to the RA70, RA71, RA72, and RA73 disk drives collectively.

•RA71-RA73 refers to the RA71, RA72, and RA73 disk drives collectively.

The following notations are used in this manual:

•Note

Identiﬁes information that is of special interest

•CAUTION

Identiﬁes information that pertains to the protection of the equipment or loss

of data

•WARNING

Identiﬁes information that pertains to your safety

vii

Related Courses and Documentation

Table 1 lists the Digital courses related to the SA7x enclosure.

Table 1 Related Courses

Title Order Number

AC Power & Grounding EY–B730–PO

Electrical Safety EY–B737E–PO

Electrical Safety and Lockout/Tagout Procedures EY–E038E–SO

RA70/BA27 Disk Drive Maintenance Course EY–5805E–IV

DSA Architecture Level 1 Course EY–5593E–IV

VAXsimPLUS Maintenance Course EY–7687E–PO

DSA Troubleshooting Course EY–9422E–LO

Table 2 lists the documentation related to the SA7x enclosure.

Table 2 Related Documentation

Title Order Number

DSA Troubleshooting Flowchart EK–DSATF–TM

Disk Drive Technical Description Manual EK–ORA70–TD

BA72 Field Maintenance Print Set MP–01429

RA7x Disk Drive Service Manual EK–ORA7X–SM

RA7x/SA7x Pocket Reference Guide EK–RSA7X–PG

RA70 Field Maintenance Print Set MP–01428

RA71/RA72 Support Print Set EM–01434

RA71/RA72 Field Maintenance Print Set MP–01434

RA73 Field Maintenance Print Set MP–01439

SAxxx Storage Array Conﬁguration Guide EK–SAXXX–CG

SA7x Enclosure Service Manual EK–OSA7X–SM

SA7x Support Print Set EM–01435

SA7x Field Maintenance Print Set MP–01435

viii

Introducing the SA7x Enclosure

This chapter is an overview of the SA7x enclosure, lists SA7x conﬁgurations and

speciﬁcations, and discusses user precautions.

1.1 SA7x Enclosure Overview

The term ‘‘SA7x’’ refers to the family of enclosures that includes:

• The SA70—Accommodates one to four RA70 disk drives (280 MB each)

• The SA71—Accommodates one to four RA71 disk drives (700 MB each)

• The SA72—Accommodates one to four RA72 disk drives (1 GB each)

• The SA73—Accommodates one to four RA73 disk drives (2 GB each)

For all of these designations, the enclosure itself is physically identical. What

differentiates an SA70 enclosure from an SA71 enclosure is the type of drives

installed in each (RA70s and RA71s). See Figure 1–1 for an illustration of an

SA7x enclosure.

Table 1–1 lists the the types of disk drives that are authorized for installation in

each SA7x enclosure.

Table 1–1 Authorized Disk Drive Installations

Enclosure RA70 RA71 RA72 RA73

SA70 Yes No No No

SA71 Yes Yes Yes Yes1

SA72 Yes Yes Yes Yes1

SA73 Yes Yes Yes Yes

1A maximum of three drives may be installed.

The SA7x enclosure provides mounting space, power, cooling, and control for up

to four RA7x disk drives. Each disk drive is independently powered and operated

by the enclosure.

The enclosure is installed as a component in a storage array cabinet.

The RA7x disk drive used in the SA7x enclosure is a random-access Winchester

technology drive with a formatted storage capacity of 280 MB to 2 GB. The drive

features modular components that can be replaced with minimum down time.

Figure 1–2 shows an RA70 disk drive. Figure 1–3 shows an RA71 through RA73

disk drive.

Introducing the SA7x Enclosure 1–1

Introducing the SA7x Enclosure

1.1 SA7x Enclosure Overview

Figure 1–1 SA7x Enclosure

RIGHT REAR

DISK DRIVE

POSITION

LEFT REAR

DISK DRIVE

POSITION

FAN

TRANSITION

BOARD 2

OPERATOR

CONTROL

PANEL

RA70 DISK

DRIVE SHOWN

FRONT

COVER

RIGHT FRONT

DISK DRIVE

POSITION

LEFT FRONT

DISK DRIVE

POSITION

DRIVE POWER

SWITCH PANEL

FRAME

CHASSIS

POWER

SUPPLY

CXO-1845D_S

TRANSITION

BOARD 1

MOUNTING

SCREWS

REAR

COVER

(NOT

SHOWN)

You can combine SA7x enclosures into shadow sets. When using shadow sets,

remember that when replacing the power supply or transition boards 1 or 2, you

need to remove the power from the enclosure.

RA7x disk drive can be used with any disk drive controller using a standard

disk interface (SDI), including KDA50, KDB50, or KDM50 controller modules,

hierarchical storage controllers (HSCs), and UDA controllers. The drive is

compatible with the Digital Storage Architecture (DSA) and Mass Storage Control

Protocol (MSCP).

1–2 Introducing the SA7x Enclosure

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