Chapter 14. SSA Adapter Information
For a description of the SSAadapter, port addresses, and the rules for SSA loops, see
Chapter1, “Introducing SSA and the Advanced SerialRAID Adapters”.

Installing the SSA Adapter

1. Install the adapter and disk drive microcode from the media that are supplied with
the adapter.A README sheet of installation instructions is also supplied.
2. Install the adapter into a slot in the using system (see the Installation and Service
Guide for the using system).
3. Switch on the using system. This action ensures that the latest version of the
microcode that is available on the using system is downloaded into the adapter
before the disk drives are connected.
4. Connect the SSA cables to the adapter and to the devices that are to be attached
to the adapter.For information about how the cables are to be attached, see the
configuration plan that was created when the subsystem was ordered.
If the configuration plan is not available, use the example configuration information
that is given in the service information for the devices.
See also Chapter2, “Introducing SSALoops”on page 7 for general information
about SSAloops and links.
Note: If, for any reason, an adapter is exchanged for a replacement adapter,all
associated arrays that were not synchronized when the adapter failed are rebuilt.

Cron Table Entries

During the installation of the SSAsoftware, the following four entries are made in the
system cron table:
015***/usr/lpp/diagnostics/bin/run_ssa_ela 1>/dev/null 2>/dev/null
0****/usr/lpp/diagnostics/bin/run_ssa_healthcheck 1>/dev/null 2>/dev/null
30****/usr/lpp/diagnostics/bin/run_ssa_encl_healthcheck 1>/dev/null 2/dev/null
304***/usr/lpp/diagnostics/bin/run_ssa_link_speed 1>/dev/null 2>/dev/null
The first entry instructs the run_ssa_ela shell script to run at 05:01 each day.This shell
script analyzes the error log. If it finds any problems, the script warns the user in the
following ways. It sends:
vAn error message to /dev/console. This message is displayed on the system console.
vAn OPMSG to the error log. This message indicates the source of the error.
vAmail message to ssa_adm.
Note: ssa_adm is an alias mail address that is set up in /etc/aliases. By default, the
address is set to “root”, but you can set it to any valid mail address for the
using system.
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