Specifications

open system, the IBM Subsystem Device Driver requires a minimum of two
adapters. You can run the Subsystem Device Driver with one SCSI adapter,
but you have no failover protection. The maximum number of adapters
supported is 16 for a total of 32 SCSI 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 and for which an installation script is provided.
Before you install the package
Perform the following steps before you install the host attachment package:
1. Attach the ESS to your host system. See “General information about attaching
to an open-systems host with SCSI adapters” on page 7.
2. Turn on the host system and all attachments.
3. Ensure that you have root access.
4. Ensure that you have administrator knowledge.
5. Ensure that you have knowledge of the System Management Interface Tool
(SMIT).
Replacing a prior version of the package
If you want to replace a prior version of the host attachment package and have data
that exists on all configured 2105 disks, the code prompts you to remove all ESS
product-related hdisk devices. Perform the following steps to remove the devices:
1. Run the umount command on the file system.
For example, type umount -t x, where x is the file system name.
2. Run the varyoffvg command for the 2105 volume group.
For example, type varyoffvg -s VGname.
3. Type rmdev -dl hdisk# on the command line to unconfigure the 2105 devices.
After you install the ibm2105.rte file and reconfigure the devices, run the vary on
command on the volume groups and remount the file systems. The data on the file
systems should be available.
Installing the package
Perform the following steps by using SMIT to install the host attachment package
from a compact disc on your system. You must have superuser authority to
complete the instructions.
Note: The following procedure is an example. The example uses /dev/cd0 for the
address of the compact disc. Your address might be different.
1. From your desktop window, type smit install_update to go directly to the
installation panel.
2. Click Install and Update from the Latest Available Software and press
Enter.
3. Press F4 to open the Input Device/Directory for Software window.
4. Select the CD-ROM drive that you are using for the installation, for example,
/dev/cd0.
5. Press Enter. The Install and Update from the Latest Available Software window
opens.
6. Click Software to Install and press F4.
7. Select Software Packages and press F7.
58 ESS Host Systems Attachment Guide