HP A4800A User Manual

HP A4800A PCI FWD SCSI Host Bus

Adapter

Service and User Guide

Edition 6

Customer Order Number: A3725-90007

Manufacturing Part Number: A3725-96031

E0201

U.S.A.

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1 HP A4800A Adapter Overview

This chapter contains the following sections that describe the HP A4800A PCI FWD SCSI host bus adapter (HBA):

• “About the A4800A Adapter” on page 7.

Chapter 1 5

HPA4800A Adapter Overview

• “Features” on page 9.

• “Supported HP 9000 Servers” on page 10.

• “Cable Speciﬁcations” on page 11.

Chapter 16

HPA4800A Adapter Overview

About the A4800A Adapter

The HP A4800A PCI Fast/Wide/Differential (FWD) SCSI Host Bus Adapter is an intelligent, high-performance, direct memory access (DMA) bus master SCSI host bus adapter for HP 9000 and HP e3000 servers. The adapter combines a SCSI executive processor and a PCI Local Bus interface in a single chip. This adapter supports bootable devices and can be used with hard drives, tape drives, and other differential SCSI devices. The adapter is High Voltage Differential (HVD) SCSI only.

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

Chapter 1 7

HPA4800A Adapter Overview

About the A4800A Adapter

Figure 1-1 below is a drawing of the A4800A adapter.

Figure 1-1 The A4800A PCI Ultra HVD SCSI Host Bus Adapter

Internal terminator

External Terminator

J1 to PCI Bus connector

68-pin External SCSI interface

Chapter 18

HPA4800A Adapter Overview

Features

The A4800A adapter has the following features:

• Compliance with Intel PCI Local Bus Rev. 2.1 speciﬁcation.

• Compliance with ANSI X3.131-1994 SCSI-2 standard.

• Support for asynchronous and synchronous transfer modes.

• Synchronous SCSI data transfer rates: — Wide and Ultra SCSI (40 Mbytes/sec).

— Ultra SCSI (20 Mbytes/sec). — Wide and Fast SCSI (20 Mbytes/sec) differential. — Fast SCSI (10 Mbytes/sec) differential. — Narrow (5 Mbytes/sec) differential.

• Support for differential mode.

Features

• Support for up to 15 SCSI, SCSI-2, or Ultra devices.

• Support for logical unit numbers (LUNs) 0-7.

• Support for bus master DMA.

• 68-pin, High-Density (HD) SCSI external connector.

• Supports HVD SCSI, SCSI-2, or Ultra devices only.

Chapter 1 9

HPA4800A Adapter Overview

Supported HP 9000 Servers

Table 1-1 below shows which HP 9000 servers support the A4800A adapter.

Table 1-1 A4800A Supported HP 9000 Servers

HP 9000 Server

A-Class 10.20 (for the A180

L-Class 11.0 or 11i N-Class 11.0 or 11i MPE/iX 7.0 or later V-Class 11.0 or 11i

Note that the maximum number of SCSI HBAs you can install in any HP 9000 or HP e3000 server is equal to the maximum number of corresponding card slots in the server. For example, if you are installing SCSI PCI HBAs and the server has four PCI card slots, you can install four SCSI PCI HBAs in that server.

HP-UX Operating

System

and A180C servers only) & 11.0 or 11i

HP e3000 Operating

System

MPE/iX 7.0 or later

Chapter 110

Cable Speciﬁcations

The A4800A adapter supports High Voltage Differential (HVD) SCSI connections only. Internal cables for interconnection with the embedded CD-ROM drive and DAT tape drive are provided in the system.

The A5068A SCSI cable kit is required when connecting the A4800A adapter to internal, non-embedded SCSI devices. Table 1-2 below shows the parts that make up the A5068A kit.

Table 1-2 A5068A SCSI Cable Kit

HPA4800A Adapter Overview

Cable Speciﬁcations

Description

10-inch SCSI shielded cable with back shell

68-pin HD SCSI terminator A4700-67098

For more information on connecting the adapter to internal disk and tape devices, refer to the appropriate disk drive or tape drive product manual.

Part

Number

A4700-67086

For V-Class Systems

If you are connecting external SCSI devices to an A4800A adapter installed in a V-Class system, you must use one of the cables shown in Table 1-3 below. Note that cables are normally supplied with the peripheral device.

Table 1-3 Cables for Connecting External SCSI Devices to the A4800A

Adapter in V-Class Systems

Description

5-meter 68-pin HD/68-pin HD Male inline terminator SCSI cable for V-Class

Product Number

A3401A 875

Option

Chapter 1 11

HPA4800A Adapter Overview

Cable Speciﬁcations

Table 1-3 Cables for Connecting External SCSI Devices to the A4800A

Adapter in V-Class Systems (Continued) (Continued)

Description

10-meter 68-pin HD/68-pin HD Male inline terminator SCSI cable for V-Class

2/5-meter 68-pin HD Male inline terminator SCSI cable for V-Class

2/3-meter 68-pin HD Male inline terminator SCSI cable for V-Class

Product Number

A3401A 851

A3401A 871

A3401A 873

Option

Chapter 112

2 Installing the A4800A Adapter

This chapter contains the following sections that describe how to install the A4800A adapter:

• “Preparing for Installation” on page 15.

Chapter 2 13

Installing the A4800A Adapter

• “Connecting to External SCSI Devices” on page 16.

• “Handling the A4800A Adapter” on page 17.

• “Looking at Adapter Installation” on page 18.

• “Connecting SCSI Peripheral Devices” on page 25.

• “Terminating the A4800A Adapter” on page 28

• “Setting SCSI IDs” on page 29

• “Verifying Installation” on page 31.

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Installing the A4800A Adapter

Preparing for Installation

Installing the host bus adapter requires disassembly of some server components. Before beginning installation, see the HP 9000 system manual for detailed instructions about how to install host bus adapters in the PCI slots.

You will need the following things:

✓ One HP A4800A SCSI adapter. ✓ One grounding (ESD) wrist strap. ✓ Any other tools needed for installing components in the HP 9000 or

HP e3000 system (for example, screwdrivers); see the system’s documentation.

Chapter 2 15

Installing the A4800A Adapter

Connecting to External SCSI Devices

If you intend to connect the PCI Ultra SCSI adapter to an external SCSI device, you need to supply a differential SCSI cable that is long enough to reach the device. Part numbers for several different cable lengths are listed in the section titled “Cable Speciﬁcations” on page 11.

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Installing the A4800A Adapter

Handling the A4800A Adapter

The host bus adapter is packaged with an ESD kit, which contains materials to prevent damage from static electricity during installation.

CAUTION The adapter is highly susceptible to damage by electrostatic discharge

during installation and routine maintenance procedures. Do not handle circuit boards without wearing a wrist strap fastened to a good earth ground or to the system chassis.

While you are installing the A4800A adapter, please follow these precautions:

✓ Keep the adapter in its shielded antistatic bag until you are ready to

install it.

✓ Use a wrist strap or other ESD protection. Wrap the strap around

your wrist and attach the copper end to a metal portion of the computer frame.

✓ Avoid working in carpeted areas. ✓ Gently place the adapter, printed circuit board (PCB) side down, on

an antistatic work surface pad.

✓ Hold the adapter only by its sides or cover plate. Do not touch any

components on the printed circuit board assembly (PCBA).

✓ Do not use any test equipment to check the components on the PCB. ✓ Do not bump, jar, or drop the adapter. Do not place other objects on

top of the adapter.

✓ Transport the adapter in its shielded bag in an appropriate shipping

container. Do not put other materials in the bag with the adapter.

Chapter 2 17

Installing the A4800A Adapter

Looking at Adapter Installation

NOTE The host bus adapter card is supported on the HP N4000 N-class system.

Refer to the Hewlett-Packard eproducts web site (http://www.eproducts.hp.com) to disassemble the system, install the adapter in an available PCI slot, and reassemble the system.

Installation can be performed in one of two ways:

• Use the OLAR (On Line Add/Replace) capability (HP-UX 11i)

• Power down the system and then add or replace the HBA

The method you choose will depend on your situation and requirements.

Install Using OLAR (HP-UX 11i)

The letters O, L, A and R stand for On Line Addition [and] Replacement. This refers to the ability of a PCI I/O card to be installed (replaced or added) in an HP-UX computer system designed to support this feature without the need for completely shutting down, then re-booting the system or adversely affecting other system components. The system hardware uses the per-slot power control combined with operating system support in HP-UX 11i to enable this feature.

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

this time this includes V-Class and SuperDome systems. HP recommends that these systems only be opened by a qualiﬁed HP Engineer. Failureto observe this requirement can invalidate any support agreement or warranty to which the owner might otherwise be entitled.

Important Terms and Concepts

The addition or replacement of an OLAR-compatible card may be done in either one of two ways:

1. Using the SAM utility.

Chapter 218

2. Issuing command-line commands using rad.

For detailed information about the use of either of these two procedures, please refer to the following document:

Conﬁguring HP-UX For Peripherals, HP Part Number B2355-90698 This document may be ordered from HP, or you may view, download and

print it from the following website: www.docs.hp.com

Table 2-1 Important Terms

Term Meaning

OLAR All aspects of the OLAR feature

Power Domain A grouping of 1 or more

Installing the A4800A Adapter

Looking at Adapter Installation

including On-line Addition (OLA) and On-line Replacement (OLR).

interface card slots that can be powered on or off as a unit. (NOTE: Multi-slot power domains are not currently supported)

target card / target card slot The interface card which will be

added or replaced using OLAR, and the card slot in which it resides.

affected card / affected card slot

IMPORTANT In many cases, other interface cards and slots within the system are

dependent upon the target card. For example: If the target card is a multiple-port card, suspending or deleting drivers

for the target card slot also suspends individual drivers for the multiple hardware paths on that card).

Chapter 2 19

Interface cards and the card slots in which they reside, and which are in the same power domain as the target slot.

Installing the A4800A Adapter

Looking at Adapter Installation

During a card replacement operation, SAM performs a Critical Resource Analysis, which checks all ports on the target card for critical resources

that would be temporarily unavailable while the card is shut down.

Planning and Preparation

SAM will, generally, prevent you from performing OLAR procedures that would adversely affect other areas of the server. Refer to Conﬁguring HP-UX For Peripherals, HP Part Number B2355-90698 for detailed information.

Critical Resources Because power to the slot must be off when the old card is removed and the new card is inserted, the effects of shutting down the card’s functions must be carefully considered.

This is particularly important if there is no on-line failover or backup card to pick up those functions. For example:

• Which mass storage devices will be temporarily disconnected when the card is shut down?

• Will a critical networking connection be lost?

A critical resource is one that would cause a system crash or prevent the operation from successfully completing if the resource were temporarily suspended or disconnected. For example, if the SCSI adapter to be replaced connects to the unmirrored root disk or swap space, the system will crash when the card is shut down.

During an OLAR procedure, it is essential to check the targeted card for critical resources, as well as the effects of existing disk mirrors and other situations where a card’s functions can be taken over by another card that will not be affected.

Fortunately SAM performs a thorough critical resource analysis automatically, and presents options to you based on its ﬁndings. If you determine that critical resources will be affected by the procedure, you should replace the card when the server is off-line. If you must take action immediately, you can use rad to attempt an on-line addition of a backup card and deletion of the target card.

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