Compaq HSZ80 User manual

HSZ80 Array Controller ACS Version 8.3

Configuration and CLI Reference Guide

First Edition (December 1998)

Part Number EK-HSZ80-RG. A01/388222-001

Compaq Computer Corporation

While Compaq Computer Corporation believes the information included in this manual is correct as of the date

of publication, it is subject to change without notice. Compaq makes no representations that the interconnec-

tion 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 equip-

ment or software in accordance with the description. No responsibility is assumed for the use or reliability of

firmware on equipment not supplied by Compaq or its affiliated companies. Possession, use, or copying of the

software or firmware described in this documentation is authorized only pursuant to a valid written license

from Compaq, an authorized sublicensor, or the identified licensor.

Commercial Computer Software, Computer Software Documentation and Technical Data for Commercial

Items are licensed to the U.S. Government with Compaq’s standard commercial license and, when applicable,

the rights in DFAR 252.227 7015, "Technical Data-Commercial Items."

Compaq, the Compaq logo, DIGITAL, DIGITAL UNIX, DECconnect, HSZ, HSG, StorageWorks, VMS,

OpenVMS Registered in the United States Patent and Trademark Office.

UNIX is a registered trademark in the United States and other countries exclusively through X/Open Company

Ltd. Windows NT is a registered trademark of the Microsoft Corporation. Sun is a registered trademark of Sun

Microsystems, Inc. Hewlett-Packard, TACHYON, and HP-UX are registered trademarks of the Hewlett-Pack-

ard Company. IBM and AIX are registered trademarks of International Business Machines Corporation. All

other trademarks and registered trademarks are the property of their respective owners.

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 interfer-

ence 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 manuals, may cause harm-

ful interference to radio communications. Operation of this equipment in a residential area is likely to cause

harmful interference in which case the user will be required to correct the interference at his own expense.

Restrictions apply to the use of the local-connection port on this series of controllers; failure to observe these

restrictions may result in harmful interference. Always disconnect this port as soon as possible after complet-

ing the setup operation. Any changes or modifications made to this equipment may void the user's authority to

operate the equipment.

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.

Achtung!

Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes

Rundfunkstörungen auftreten, in welchen Fällen der Benutzer für entsprechende Gegenmaßnahmen verant-

wortlich ist.

Attention!

Ceci est un produit de Classe A. Dans un environnement domestique, ce produit risque de créer des inter-

férences radioélectriques, il appartiendra alors à l'utilisateur de prendre les mesures spécifiques appropriées.

JAPAN

USA

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 FCC rules, which are

designed to provide reasonable protection against such radio frequency interference. Operation of this equip-

ment 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. Any modifications to this device - unless

expressly approved by the manufacturer - can void the user’s authority to operate this equipment under part 15

of the FCC rules.

v

Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide

About This Guide

Getting Help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Required Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx

Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii

Chapter 1

General Description

Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2

Summary of HSZ80 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5

The HSZ80 Array Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–7

Cache Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–18

External Cache Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–29

Chapter 2

Configuring an HSZ80 Array Controller

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2

Configuring an HSZ80 Array Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3

Setting the PVA Module ID Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–25

Establishing a Local Connection to the Controller . . . . . . . . . . . . . . . . . . . . . . . . 2–26

Selecting a Failover Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–29

Enabling Mirrored Write-Back Cache. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–31

Setting SCSI Target ID Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–33

Using Preferred ID Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–35

vi

Chapter 3

Creating Storagesets

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2

Planning and Configuring Storagesets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–4

Creating a Storageset and Device Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5

Determining Storage Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–7

Choosing a Storageset Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–8

Cloning Data for Backup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–20

Backing Up Your Subsystem Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–25

Node IDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–30

Assigning Unit Numbers for Host Access to Storagesets . . . . . . . . . . . . . . . . . . . 3–32

Creating a Storageset Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–34

Planning Partitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–40

Choosing Switches for Storagesets and Devices. . . . . . . . . . . . . . . . . . . . . . . . . . 3–42

RAIDset Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–43

Mirrorset Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–45

Device Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–48

Initialize Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–51

Unit Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–58

Chapter 4

Configuring Storagesets

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2

Configuring with the Command Console LUN. . . . . . . . . . . . . . . . . . . . . . . . . . . 4–19

Configuring Units with Multiple Hosts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–23

Moving Storagesets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–35

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Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide

Chapter 5

CLI Commands

CLI Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2

ADD DISK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–7

ADD MIRRORSET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–11

ADD PASSTHROUGH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–16

ADD RAIDSET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–19

ADD SPARESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–23

ADD STRIPESET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–24

ADD UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–27

CLEAR_ERRORS CLI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–35

CLEAR_ERRORS controller INVALID_CACHE . . . . . . . . . . . . . . . . . . . . . . . . 5–36

CLEAR_ERRORS device-name UNKNOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–38

CLEAR_ERRORS unit-number LOST_DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . 5–40

CLEAR_ERRORS unit-number UNWRITEABLE_DATA . . . . . . . . . . . . . . . . . 5–42

CONFIGURATION RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–44

CONFIGURATION RESTORE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–45

CONFIGURATION SAVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–47

CREATE_PARTITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–48

DELETE container-name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–51

DELETE FAILEDSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–53

DELETE SPARESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–54

DELETE unit-number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–55

DESTROY_PARTITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–57

DIRECTORY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–59

HELP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–60

INITIALIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–62

LOCATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–67

viii

MIRROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–70

POWEROFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–74

REDUCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–77

RENAME. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–81

RESTART controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–83

RETRY_ERRORS unit-number UNWRITEABLE_DATA . . . . . . . . . . . . . . . . . 5–85

RUN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–86

SELFTEST controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–89

SET controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–91

SET device-name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–102

SET EMU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–105

SET FAILEDSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–108

SET FAILOVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–110

SET mirrorset-name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–112

SET MULTIBUS_FAILOVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–118

SET NOFAILOVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–120

SET NOMULTIBUS_FAILOVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–122

SET RAIDset-name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–124

SET unit-number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–128

SHOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–136

SHUTDOWN controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–143

UNMIRROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–145

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Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide

Appendix A

System Profiles

Device Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A–2

Storageset Profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A–3

Enclosure Template . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A–4

Appendix B

Controller Specifications

Physical and Electrical Specifications for the Controller . . . . . . . . . . . . . . . . . . . B–2

Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–3

Glossary

Index

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Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide

Figures

Basic Building Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3

Bridging the Gap Between the Host and Its Storage Subsystem . . . . . . . . . . . . . . 1–7

HSZ80 Array Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–9

Parts Used in Configuring the HSZ80 Array Controller . . . . . . . . . . . . . . . . . . . 1–10

Optional Maintenance Port Cable for a Terminal Connection . . . . . . . . . . . . . . . 1–12

Location of Controllers and Cache Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–13

HSZ80 Controller Operator Control Panel (OCP) . . . . . . . . . . . . . . . . . . . . . . . . 1–14

Cache Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–19

ECB for Dual-Redundant Controller Configurations . . . . . . . . . . . . . . . . . . . . . . 1–30

Cabling for a Single-Controller Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5

Cabling for a Dual-Redundant Controller Configuration in

Transparent Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10

Cabling for a Dual-Redundant Controller Configuration in

Multiple-Bus Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–16

SCSI Target ID Numbers on the Controller Device Bus and PVA Settings in

an Extended Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–25

PC/Terminal to Maintenance Port Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–27

“This Controller” and “Other Controller” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–28

Host SCSI Bus and Controller Device Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–33

Units Created from Storagesets, Partitions, and Drives . . . . . . . . . . . . . . . . . . . . . 3–3

Storageset Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6

Striping Lets Several Disk Drives Participate in Each I/O Request . . . . . . . . . . . . 3–9

Distribute Members across Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11

Mirrorsets Maintain Two Copies of the Same Data . . . . . . . . . . . . . . . . . . . . . . . 3–13

First Mirrorset Members on Different Buses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–14

Parity Ensures Availability; Striping Provides Good Read Performance . . . . . . . 3–16

Striping and Mirroring in the Same Storageset . . . . . . . . . . . . . . . . . . . . . . . . . . 3–18

CLONE Steps for Duplicating Unit Members . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–21

xii

Storageset Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–35

PTL Naming Convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–37

PTL Addressing in an Extended Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 3–38

Locating Devices using PTLs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–39

Partitioning a Single-Disk Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–40

Chunk Size Larger than the Request Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–52

Chunk Size Smaller than the Request Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–53

Setting Host Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–25

Accessing Units on a Given Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–27

Accessing Units with the Host Port’s SCSI ID Number . . . . . . . . . . . . . . . . . . . . 4–29

Accessing Units through Port Access and the Host Port’s SCSI ID Number . . . 4–31

Assigning Units through Multiple Host Adapters . . . . . . . . . . . . . . . . . . . . . . . . 4–33

Moving a Storageset from one Subsystem to Another . . . . . . . . . . . . . . . . . . . . . 4–35

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Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide

Tables

Basic Building Blocks List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4

Summary of Controller Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5

HSZ80 Array Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–9

Description of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–10

Parts of the Optional Maintenance Port Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–12

Cache Module Memory Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–18

Location of Cache Module Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–19

Cache Policies and Cache Module Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–23

Resulting Cache Policies and ECB Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–25

ECB Capacity Based on Memory Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–29

Location of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–30

Location of Parts for a Single Controller Configuration . . . . . . . . . . . . . . . . . . . 2–5

Location of Parts for Transparent Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11

Location of Parts for Multiple-Bus Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–17

Controller Limitations for RAIDsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3

A Comparison of Different Kinds of Storagesets . . . . . . . . . . . . . . . . . . . . . . . . . . 3–8

Unit Numbering Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–33

Maximum Chunk Sizes for a RAIDset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–54

UNIT Switches for Storagesets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–58

Recall and Edit Command Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–4

Unit Numbering Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–5

ADD UNIT Switches for Storagesets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–28

Poweroff Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–75

SET controller Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–91

Maximum SCSI-Bus Lengths for Given Data Transfer Rate . . . . . . . . . . . . . . . 5–100

EMU Set Point Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–106

SET UNIT Switches for Existing Containers . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–129

Controller Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B–2

xiv

Optimum Operating Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . .B–3

Maximum Operating Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . .B–4

Maximum Nonoperating Environmental Specifications . . . . . . . . . . . . . . . . . . . .B–4

xv

Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide

About This Guide

This book describes the features of the HSZ80 Array Controller, configuration

procedures for the controller and storagesets running Array Controller Software

(ACS) 8.3Z, and the CLI commands used in configuring.

This book does not contain information about the operating environments to which

the controller may be connected, nor does it contain detailed information about

subsystem enclosures or their components. See the documentation that accompanied

those peripherals for information about them.

Getting Help

If you have a problem and have exhausted the information in this reference guide, you

can get further information and other help in the following locations.

Compaq Website

The Compaq Website has information on this product as well as the latest drivers and

Flash ROM images. You can access the Compaq website by logging on to the Internet

at http://www.compaq.com.

Telephone Numbers

For Compaq technical support:

In the United States and Canada, call 1-800-652-6672.

For Compaq technical support phone numbers outside the United States and Canada,

visit the Compaq Website at: http://www.compaq.com.

xvi About This Guide

Precautions

Follow these precautions when you’re carrying out the procedures in this book.

Electrostatic Discharge Precautions

Static electricity collects on all nonconducting material, such as paper, cloth, and

plastic. An electrostatic discharge (ESD) can easily damage a controller or other

subsystem component even though you may not see or feel the discharge. Follow

these precautions whenever you’re servicing a subsystem or one of its components:

■ Always use an ESD wrist strap when servicing the controller or other

components in the subsystem. Make sure that the strap contacts bare skin and fits

snugly, and that its grounding lead is attached to a bus that is a verified earth

ground.

■ Before touching any circuit board or component, always touch a verifiable earth

ground to discharge any static electricity that may be present in your clothing.

■ Always keep circuit boards and components away from nonconducting material.

■ Always keep clothing away from circuit boards and components.

■ Always use antistatic bags and grounding mats for storing circuit boards or

components during replacement procedures.

■ Always keep the ESD cover over the program card when the card is in the

controller. If you remove the card, put it in its original carrying case. Never touch

the contacts or twist or bend the card while you’re handling it.

■ Do not touch the connector pins of a cable when it is attached to a component or

host.

Component Precaution

System components referenced in this manual comply to regulatory standards

documented herein. Use of other components in their place may violate country

standards, negate regulatory compliance, or invalidate the warranty on your product.

xvii

Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide

VHDCI Cable Precautions

All of the cables to the controller, cache module, and external cache battery use very-

high-density cable interconnect connectors (VHDCI). These connectors have

extraordinarily small mating surfaces that can be adversely affected by dust and

movement.

Use the following precautions when you’re connecting cables that use VHDCI

connectors:

■ Clean the mating surfaces with a blast of clean air.

■ Mate the connectors by hand, then tighten the retaining screws to 1.5 inch-

pounds—approximately 1/4 additional turn after the connectors have fully mated.

■ Test the assembly by gently pulling on the cable, which should not produce

visible separation.

Maintenance Port Precautions

The maintenance port generates, uses, and radiates radio-frequency energy through

cables that are connected to it. This energy may interfere with radio and television

reception. Do not leave a cable connected to this port when you’re not communicating

with the controller.

xviii About This Guide

Conventions

This book uses the following typographical conventions and special notices to help

you find what you’re looking for.

Typographical Conventions

Convention Meaning

ALLCAPS Command syntax that must be entered exactly as shown

and for commands discussed within text, for example:

SET FAILOVER COPY=OTHER_CONTROLLER

“Use the SHOW SPARESET command to show the contents of

the spareset.”

Monospaced Screen display.

Sans serif italic

Command variable or numeric value that you supply, for

example:

SHOW

RAIDset-name

or

set this_controller id=

(n,n,n,n,)

italic Reference to other books, for example: “See

....

for

details.”

.

Indicates that a portion of an example or figure has been

omitted.

“this controller” The controller serving your current CLI session through a

local or remote terminal.

“other controller” The controller in a dual-redundant pair that’s connected

to the controller serving your current CLI session.

xix

Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide

Special Notices

This book doesn’t contain detailed descriptions of standard safety procedures.

However, it does contain warnings for procedures that could cause personal injury and

cautions for procedures that could damage the controller or its related components.

Look for these symbols when you’re carrying out the procedures in this book:

WARNING: A warning indicates the presence of a hazard that can cause

personal injury if you do not observe the precautions in the text.

CAUTION: A caution indicates the presence of a hazard that might dam-

age hardware, corrupt software, or cause a loss of data.

IMPORTANT: An

important

note is a type of note that provides information

essential to the completion of a task. Users can disregard information in a note

and still complete a task, but they should not disregard an important note.

NOTE: A note provides additional information that’s related to the completion of an

instruction or procedure.

xx About This Guide

Required Tools

You’ll need the following tools to service the controller, cache module, external cache

battery (ECB), the Power Verification and Addressing (PVA) module and the I/O

module:

■ A flathead screwdriver for loosening and tightening the I/O module retaining

screws.

■ A small phillips screwdriver for loosening and tightening the GLM access door

screws.

■ An antistatic wrist strap.

■ An antistatic mat on which to place modules during servicing.

■ A Storage Building Block (SBB) Extractor for removing StorageWorks building

blocks. This tool is not required, but it will enable you to perform more

efficiently.

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