Specifications

v Point-to-point (switched fabric) topology
v Arbitrated loop topology
The RS/6000 and pSeries host systems do not support more than one
host bus adapter on the loop. The RS/6000 and pSeries host systems do
support a direct connection of the RS/6000 and pSeries host systems to
an ESS using the fibre-channel arbitrated loop protocol.
For procedures about how to attach an RS/6000 or pSeries host system with SCSI
adapters, see “Attaching with SCSI adapters” on page 57.
Attachment requirements
This section lists the requirements for attaching the ESS to your host system:
v Ensure that you have the installation script files. These files are on the diskette
and the CD that you receive with the ESS.
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.
v For details about the release level for your operating system, see the following
Web site:
www.storage.ibm.com/hardsoft/products/ess/supserver.htm
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 defines the fibre-port configuration if you did not do it
during the installation of the ESS or fibre-channel adapters.
Note: Use the information on the logical configuration work sheet in the IBM
Enterprise Storage Server Configuration Planner that you 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. Either you or an IBM SSR checks the LUN limitations for the RS/6000 and
pSeries. See Table 6 on page 11.
Note: The IBM Subsystem Device Driver supports RS/6000 and pSeries host
systems in a clustering environment. To have failover protection on an open
system, the Subsystem Device Driver requires a minimum of two
fibre-channel adapters. The maximum number of fibre-channel adapters
supported is 16 for a total of 16 fibre-channel ports.
Installing the 2105 host attachment package
This section provides the instructions to install the host attachment package for the
ESS. IBM recommends that you run the host attachment package on each host
system that is attached to the ESS.
Before installing the package
Perform the following steps before you install the host attachment package:
Chapter 6. Attaching to an IBM RS/6000 or IBM eServer pSeries host 61
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