HP A6828A User Manual

HP A6828A PCI Ultra160 SCSI Host Bus

Adapter

Service and User Guide

Edition 2

Manufacturing Part Number: A6828-96002

E0503

United States

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iii

About This Document

1. HP A6828A Adapter Overview

About the A6828A Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2. Installing the A6828A Adapter

Overview of Installation Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Performance Tuning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Preparing for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Installing the A6828A Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Online Addition and Replacement—HP-UX 11i Only . . . . . . . . . . . . . . . . . . . . . . . . 14

Planning and Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Critical Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Adapter Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Connecting External SCSI Peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Specifying SCSI Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

SCSI IDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Setting SCSI IDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Maximum Data Transfer Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Setting Maximum Data Transfer Rate for A6828A Host Bus Adapter Installed in

PA-RISC Based System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Setting Maximum Data Transfer Rate for A6828A Host Bus Adapter Installed in

Itanium‚-Based System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Auto Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Controlling Auto Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Bus Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Setting Bus Width for A6828A Host Bus Adapter Installed in PA-RISC Based

System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Setting Bus Width for A6828A Host Bus Adapter Installed in Itanium‚-Based

System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Setting SCSI Parameters to Default Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

hp servers rp7410, rp8400, and superdome. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

All Other Servers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Installing the SCSI Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Conﬁguring LUN 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Contents

Adding Multi-Initiator Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Multi-Initiator Support for Itanium‚-Based System. . . . . . . . . . . . . . . . . . . . . . . . . . 54

Multi-Initiator Support for PA-RISC Based System. . . . . . . . . . . . . . . . . . . . . . . . . . 54

Verifying Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Using the Extended Firmware Interface Flash Utility . . . . . . . . . . . . . . . . . . . . . . . . . 58

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Menu Driven Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

3. Troubleshooting

General Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

NVRAM SCSI Parameters Do Not Match . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Creating Missing Device Files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

If the A6828A Adapter is Not Claimed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Setting and Conﬁrming SCSI Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Setting and ConﬁrmingSCSI Parameters for HP A6828A HostBus Adapters Installed

in PA-RISC Based Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

The SCSI Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Setting and Conﬁrming SCSI Parameters for HP A6828A Host Bus Adapter Installed

in Itanium‚-Based Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Domain Validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Using Support Tools Manager (STM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Contacting Your Hewlett-Packard Representative . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

A. SCSI Sense Codes

B. Technical Speciﬁcations

Physical Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

C. Regulatory Information

Regulatory Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

FCC Statement (For U.S.A. Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

IEC Statement (Worldwide). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

DOC Statement (Canada). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Contents

Spéciﬁcation ATI Classe A (France) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

VCCI Statement (Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

vii

Contents

viii

Tables

Table 1. HP-UX 11i Releases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Table 2. Publishing History Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

Table 3. Document Organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

Table 2-1. Important OLAR Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 2-2. Ability to Set SCSI Parameters on HP-UX Systems. . . . . . . . . . . . . . . . . 22

Table 2-3. Record of SCSI IDs—A6828A Host Bus Adapter . . . . . . . . . . . . . . . . . . . 26

Table 2-4. Summary of A6828A Auto Termination Conﬁgurations. . . . . . . . . . . . . . 37

Table 2-5. Mapping of System Version to Driver Patch . . . . . . . . . . . . . . . . . . . . . . . 54

Table 3-1. Domain Validation Fallback Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Table A-1. SCSI Status Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Table A-2. SCSI Sense Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Table A-3. SCSI Additional Sense Code/Qualiﬁer Code Pairs. . . . . . . . . . . . . . . . . . 93

Tables

Figures

Figure 1-1. The A6828A PCI Ultra160 SCSI Host Bus Adapter . . . . . . . . . . . . . . . . . 4

Figure 2-1. SCSI Cable for External Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 2-2. Auto Termination Jumper Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figures

xii

About This Document

This document describes how to install, conﬁgure, and troubleshoot HP A6828A PCI Ultra160 SCSI host bus adapter (HBA) on HP-UX 11.x platforms.

The document printing date and part number indicate the document’s current edition. The printing date will change when a new edition is printed. Minor changes may be made at reprint without changing the printing date. The document part number will change when extensive changes are made.

Document updates may be issued between editions to correct errors or document product changes. To ensure that you receive the updated or new editions, you should subscribe to the appropriate product support service. See your HP sales representative for details.

The latest version of this document can be found online at

http://docs.hp.com.

Intended Audience

This document is intended for system and network administrators responsible for installing, conﬁguring, and managing HP A6828A PCI Ultra160 SCSI HBA.

HP-UX Release Name and Release Identiﬁer

Each HP-UX 11i release has an associated release name and release identiﬁer. The uname (1) command with the -r option returns the release identiﬁer. Table 1 shows the releases available for HP-UX 11i.

Table 1 HP-UX 11i Releases

Release

Identiﬁer

B.11.11 HP-UX 11i v1 PA-RISC

B.11.20 HP-UX 11i v1.5 Intel Itanium

B.11.22 HP-UX 11i v1.6 Intel Itanium

Release Name

Supported Processor

Architecture

xiii

Table 1 HP-UX 11i Releases (Continued)

Release

Identiﬁer

B.11.23 HP-UX 11i v2.0 Intel Itanium

Release Name

Supported Processor

Architecture

Publishing History

The details of the document versions published for various HP-UX releases are mentioned in the following table:

Table 2 Publishing History Details

Document

Manufacturing

Part Number

A6828-96002 11.0

A6828-96001 11.0

Operating

Systems

Supported

11i v1 11i v2

11i v1

Supported

Product

Versions

B.11.00 B.11.11 B.11.23

B.11.00 B.11.11

Publication

Date

May 2003

March 2002

What’s in This Document

xiv

HP A6828A PCI Ultra160 SCSI Host Bus Adapter Service and User Guide is divided into several chapters, and each chapter contains

information on installing or conﬁguring the A6828A HBA. The appendixes area contains supplemental information.

Table 3 describes the content of the chapters in more detail.

Table 3 Document Organization

Chapter Description

HP A6828A Adapter Overview

Use this chapter to know about the A6828A HBA and its features.

Table 3 Document Organization (Continued)

Chapter Description

Installing the A6828A Adapter

Troubleshooting Use this chapter to learn about

Use this chapter to install the A6828A HBA, connect external SCSI peripherals, specify SCSI parameters, install SCSI driver, conﬁgure LUN 0, add multi-initiator support, verify the installation, and use the EFI utility.

troubleshooting techniques, known problems, workarounds, and how to contact your Hewlett-Packard representative.

New and Changed Documentation in This Edition

This edition includes the following changes:

• Information on the auto termination feature has been modiﬁed.

• Information on assigning and setting the SCSI IDs has been modiﬁed.

• Information on the Extended Firmware Interface Flash (EFI) utility has been added.

Typographical Conventions

This document uses the following conventions: Book Title The title of a book. On the web and on the Instant

Information CD, it may be a hot link to the book itself. Emphasis Text that is emphasized. Bold Text that is strongly emphasized. ComputerOut Text displayed by the computer. ... The preceding element may be repeated an arbitrary

number of times.

HP Welcomes Your Comments

HP welcomes any comments and suggestions you have on this manual. You can send your comments in the following ways:

• Internet electronic mail: netinfo_feedback@cup.hp.com

• Using a feedback form located at the following URL:

http://docs.hp.com/assistance/feedback.html

Please include the following information along with your comments:

• The complete title of the manual and the part number. (The part

number appears on the title page of printed and PDF versions of a manual.)

• The section numbers and page numbers of the information on which

you are commenting.

• The version of HP-UX that you are using.

xvi

1 HP A6828A Adapter Overview

Chapter 1 1

HP A6828A Adapter Overview

This chapter contains the following sections that describe the HP A6828A PCI Ultra160 SCSI host bus adapter (HBA):

• “About the A6828A Adapter” on page 3.

• “Features” on page 5.

Chapter 12

HP A6828A Adapter Overview

About the A6828A Adapter

The A6828A PCI Ultra160 SCSI host bus adapter (HBA) provides one Ultra160 SCSI-3 interface to PCI computer systems. When you install this adapter in your PCI system, it allows connection of up to 15 SCSI devices on its single channel.

The A6828A provides 16-bit (Wide) Low Voltage Differential (LVD) or16-bit (Wide) Single-Ended (SE) SCSI solutions for your system, using only one PCI slot. The A6828A also supports legacy Fast SCSI devices, Ultra SCSI devices, and Ultra2 SCSI devices.

Consult with your Hewlett-Packard representative for more information on speciﬁc system conﬁgurations.

Chapter 1 3

HP A6828A Adapter Overview

About the A6828A Adapter

Figure 1-1 below is a drawing (not to scale) of the A6828A adapter.

Figure 1-1 The A6828A PCI Ultra160 SCSI Host Bus Adapter

J6 Channel A 68-pin internal High Density (HD) SCSI connector

(not supported on HP-UX systems)

J2 Channel A 68-pin external Very High Density Cable Interconnect (VHDCI) SCSI connector

J1T PCI bus

edge connector

A_TERM Channel A termination pin set/jumper

Chapter 14

HP A6828A Adapter Overview

Features

The A6828A adapter and its driver conform to the ANSI T10 SCSI Parallel Interace-3 (SPI-3) standard.

The A6828A adapter has the following features:

• PCI interface

— Full 64-bit (66 MHz) Direct Memory Access (DMA) bus master. — Zero wait-state bus master data bursts. — PCI Universal 3.3 V/5 V bus support. — Compliance with PCI Local Bus Speciﬁcation, Revision 2.2.

• SCSI interface

— One SCSI channel. — 16-bit (Wide) Single Ended (SE)/Low Voltage Differential (LVD).

Features

— Enabling/disabling of on-board termination, with hardware

override (using a jumper).

— 68-pin Very High Density Cable Interconnect (VHDCI)

connector on the external channel.

— 68-pin High Density connector on the internal channel (not

supported on HP-UX systems).

— Maximum data transfer rate of 160 MBytes/s per channel, with a

maximum cable length of 12 meters (with multiple SCSI devices) and a maximum 15 SCSI devices on the single channel (not

including the A6828A adapter). — Fast, Ultra, Ultra2, and Ultra160 data transfer capability. — SCSI termination power (TERMPWR) source with auto-resetting

circuit breaker. — Flash EEPROM conﬁgured with HP part number (allows easy

identiﬁcation through the ioscan command).

• HBA characteristics

— PCI4X adapter (66MHz, 64-bit data transfers).

Chapter 1 5

HP A6828A Adapter Overview

Features

— PCI board dimensions: approximately 8.95 inches x 4.25 inches. — Universal 64-bit PCI card edge connector. — Two SCSI connectors:

— One external 68-pin Very High Density Cable Interconnect

(VHDCI)—J2—for the single channel.

— One internal 68-pin High Density (HD)—J6—for the single

channel. Note that the internal HD connector is not supported on HP-UX systems.

— ISA/EISA bracket.

Chapter 16

2 Installing the A6828A Adapter

This chapter contains the following sections that describe how to install the A6828A adapter:

• “Overview of Installation Steps” on page 9

Chapter 2 7

Installing the A6828A Adapter

• “Performance Tuning” on page 11

• “Preparing for Installation” on page 12

• “Installing the A6828A Adapter” on page 13

• “Connecting External SCSI Peripherals” on page 19

• “Specifying SCSI Parameters” on page 21

• “Installing the SCSI Driver” on page 50

• “Conﬁguring LUN 0” on page 52

• “Adding Multi-Initiator Support” on page 53

• “Verifying Installation” on page 55

• “Using the Extended Firmware Interface Flash Utility” on page 58

NOTE This manual provides installation instructions and technical information

for qualiﬁed personnel who maintain or service HP-UX systems. Installing the adapter requires proﬁciency in both hardware conﬁguration and software administration.

Chapter 28

Installing the A6828A Adapter

Overview of Installation Steps

Here is a high-level view of the steps for installing the A6828A HBA:

Step 1. Review the recommendations for performance (see “Performance

Tuning” on page 11).

Step 2. Ensure that you have all the materials you will need (see “Preparing for

Installation” on page 12).

Step 3. Determine what you need to do (if anything) to conﬁgure auto

termination for the A6828A adapter (see “Auto Termination” on page 37).

Change the jumper position (see “Using the Jumper for Controlling Auto Termination” on page 38), if needed, and then go to step 4.

If you do not need to change the position of the jumper, go to step 4.

Step 4. Install the adapter (see “Installing the A6828A Adapter” on page 13).

Step 5. Attach any external SCSI devices you want to connect to the adapter (see

“Connecting External SCSI Peripherals” on page 19).

Step 6. If necessary, set any of the following SCSI parameters:

• SCSI ID (see “SCSI IDs” on page 25).

• Maximum data transfer rate (see “Maximum Data Transfer Rate” on page 27).

• Auto termination (see “Auto Termination” on page 37).

• Bus width (see “Bus Width” on page 39).

Before setting the SCSI ID, Maximum data transfer rate, and Bus width parameters through Boot Control Handler (BCH) menus, ensure that the HP-UX system supports setting of these parameters in the BCH menus (see Table 2-2 on page 22).

Step 7. Install the c8xx SCSI driver from the latest HP-UX bundle or HP IT

Resource Center (ITRC) at http://itrc.hp.com.

See “Installing the SCSI Driver” on page 50.

Chapter 2 9

Installing the A6828A Adapter

Overview of Installation Steps

Step 8. If you will be using a disk array in a multi-host environment, ensure that

you have a LUN 0 conﬁgured (see “Conﬁguring LUN 0” on page 52).

Step 9. Verify the installation (see “Verifying Installation” on page 55).

Chapter 210

Installing the A6828A Adapter

Performance Tuning

To get the best performance from the A6828A adapter, HP recommends the following things:

• Increase the number speciﬁed for the scsi_max_qdepth kernel tunable parameter:

— HP-UX 11.0: scsi_max_qdepth is a static tunable that you can

change in SAM (“Kernel Conﬁguration” screen → “Conﬁgurable Parameters” screen). Note that because this is a static tunable, you will need to reboot the system after changing its value.

— HP-UX 11i: scsi_max_qdepth is a dynamic tunable; therefore,

no system reboot is needed to change the parameter’s value. See “SCSI Queue Depth Management” in the HP-UX 11i Release Notes for more information about this tunable.

If you see “queue full” messages in the /var/adm/syslog.log ﬁle, you can avoid those messages by reducing the value for scsi_max_qdepth.

• Install the A6828A adapter in a PCI4X or PCI2X slot in the HP-UX system.

• Do not put any Single Ended (SE) SCSI devices on the same SCSI bus as Low Voltage Differential (LVD) SCSI devices. Doing this changes the entire bus to SE, which limits the bus to Ultra SCSI (40 MB/s).

• When you are assigning SCSI IDs to the SCSI devices on the bus, consider giving those devices the higher priorities on the bus (SCSI ID 7 is usually assigned to the HBA). See “SCSI IDs” on page 25 for more information.

• Ensure to set the adapter’s maximum data transfer rate to the correct rate (see “Maximum Data Transfer Rate” on page 27 for more information).

• Ensure to have the correct SCSI hardware conﬁguration. Domain Validation can detect some conﬁguration problems (see “Domain Validation” on page 98).

Chapter 2 11

Installing the A6828A Adapter

Preparing for Installation

Installation of the A6828A adapter requires disassembly of some system components. Before beginning the installation, see the HP-UX system’s manual for detailed instructions about installing host bus adapters in the PCI slots.

To install the HBA, you need the following:

✓ One HP A6828A SCSI HBA ✓ One grounding (ESD) kit (shipped with A6828A) ✓ Any other tools needed for installing components in the HP-UX

system (for example, screwdrivers); see the system’s documentation.

NOTE The maximum number of SCSI HBAs you can install in any HP-UX

system is equal to the maximum number of corresponding card slots in the system. For example, if a system has four PCI card slots, you can install four SCSI PCI HBAs in that system, assuming that all the PCI card slots are empty.

Check the latest SCSI support matrix for systems that support the A6828A adapter. The support matrix is available at http://docs.hp.com under the Networking and Communications section.

Chapter 212

Installing the A6828A Adapter

This section contains information on installing the A6828A HBA in an HP-UX system (including Online Addition and Replacement [OLAR]).

WARNING The installation procedures in this section require opening the

computer cabinet, which might expose you to high-energy (high-amperage) circuits and sharp edges in the equipment chassis. Ensure to remove all rings, watches, and other jewelry before opening the cabinet.

CAUTION The A6828A adapter contains electronic components that can easily be

damaged by small amount of static electricity. To avoid damage, follow these guidelines:

• Store the adapter in its antistatic plastic bag until you are ready to install it.

• Work in a static-free area, if possible.

• Handle the adapter by the edges only. Do not touch electronic components or electrical traces.

• If you must lay the adapter down, place it on a non-conductive mat or surface.

• Use the ESD kit that is provided with the adapter. Follow the instructions included with the kit.

• Use a suitable ground—any exposed metal surface on the system chassis.

Before beginning the installation, and without removing the adapter from its antistatic bag, inspect the adapter for any signs of obvious damage, such as chipped or loose components. Contact Hewlett-Packard if the adapter is damaged.

Install the A6828A HBA in your HP-UX system according to the documentation for the system.

Chapter 2 13

Installing the A6828A Adapter

NOTE As stated earlier, although the A6828A HBA is supported on only 64-bit

HP-UX 11.0 and 11i, you can install the adapter in either a 32-bit or 64-bit PCI slot. In addition, HP recommends using a PCI4X or PCI2X slot, to get maximum performance. However, you can install the adapter in a PCI2X, PCI1X, or shared PCI slot, if necessary.

When you have ﬁnished installing the A6828A HBA, go to section “Connecting External SCSI Peripherals” on page 19.

Online Addition and Replacement—HP-UX 11i Only

Online Addition and Replacement (OLAR) is the ability of a PCI

host bus adapter to be replaced in or added to an HP-UX system designed to support this feature, without the need for completely shutting down and then rebooting the system or adversely affecting other system components. The system hardware uses the per-slot power control combined with OS support to enable this feature.

Check the latest SCSI support matrix that contains information on the HP-UX systems that support OLAR of the A6828A adapter. The support matrix is available at http://docs.hp.com under the Networking and Communications section.

IMPORTANT Certain “classes” of hardware are not intended for access by users. At

this time, this includes superdome systems. HP recommends that these systems be opened by a qualiﬁed HP engineer only. Failure to observe this requirement can invalidate any support agreement or warranty to which the owner might otherwise be entitled.

You can add or replace an OLAR-compatible adapter in either of the following ways:

• Using the SAM utility.

• Issuing command-line commands, through rad, that refer to the c8xx OLAR script (/usr/sbin/olard.d/c8xx).

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