Specifications

Chapter 6. Attaching to an IBM RS/6000 or IBM eServer

pSeries host

This chapter describes the host system requirements and provides procedures to

attach an ESS to the following host systems with either SCSI or fibre-channel

adapters:

v RS/6000

v pSeries

v RS/6000 Series Parallel (SP) Complex

v pSeries SP Complex

For procedures on how to migrate from SCSI to fibre-channel for an RS/6000

system and a pSeries host system, see “Appendix B. Migrating from SCSI to

fibre-channel” on page 159.

Attaching with SCSI adapters

This section describes how to attach an RS/6000 or pSeries host system with SCSI

adapter. For procedures about how to attach an RS/6000 or pSeries host system

with fibre-channel adapters, see “Attaching with fibre-channel adapters” on page 60

Attachment requirements

This section lists the requirements for attaching the ESS to your host system.

v Ensure that you have 1 MB minimum of hard disk space available to install the

AIX host attachment package.

v Ensure that you have the documentation for your host system and the IBM

Enterprise Storage Server User’s Guide. The User’s Guide is on the CD that you

receive with the ESS.

For details about the release level for your operating system, see the following

Web site:

www.storage.ibm.com/hardsoft/products/ess/supserver.htm

v Ensure that you have the installation script files. These files are on the CD that

you receive with the ESS.

Either you or an IBM service support representative (SSR) must perform the

following tasks to install and configure an ESS.

1. The IBM SSR installs the ESS by using the procedures in the IBM Enterprise

Storage Server Service Guide.

2. Either you or an IBM SSR assigns the SCSI hosts to the SCSI ports on the

ESS.

Note: Use the information on the logical configuration work sheet in the IBM

Enterprise Storage Server Configuration Planner that you should have

previously filled out.

3. Either you or an IBM SSR configures the host system for the ESS. Use the

instructions in your host system publications.

4. Check the logical unit numbers (LUN) limitations for the RS/6000 and pSeries.

See Table 6 on page 11.

Note: The IBM Subsystem Device Driver 1.1.4 supports the RS/6000 and pSeries

host systems in a clustering environment. To have failover protection on an