Oracle SPARC T5-4, Service Manual

Page: 33 / 204

Configuring POST
Detecting and Managing Faults 33
POST Overview
POST is a group of PROM-based tests that run when the server is powered on or when it is
reset. POST checks the basic integrity of the critical hardware components in the server.
You can also set other Oracle ILOM properties to control various other aspects of POST
operations. For example, you can specify the events that cause POST to run, the level of testing
POST performs, and the amount of diagnostic information POST displays. These properties are
described in “Oracle ILOM Properties That Affect POST Behavior” on page 33 .
If POST detects a faulty component, the component is disabled automatically. If the server is
able to run without the disabled component, the server boots when POST completes its tests.
For example, if POST detects a faulty processor core, the core is disabled, POST completes its
test sequence, and the server boots using the remaining cores.
Related Information
■
“Oracle ILOM Properties That Affect POST Behavior” on page 33
■
“Configure POST” on page 35
■
“Run POST With Maximum Testing” on page 37
Oracle ILOM Properties That Affect POST
Behavior
Note -
The value of
keyswitch_state
must be
normal
when individual POST parameters are
changed.
Properties Values Description
/HOST keyswitch_state normal
The server can power on and run POST (based on the other
parameter settings). This parameter overrides all other
commands.
diag
The server runs POST based on predetermined settings.
standby
The server cannot power on.
locked
The server can power on and run POST, but no flash updates
can be made.
/HOST/diag mode off
POST does not run.
normal
POST runs according to
diag level
value.
/HOST/diag level max
If
diag mode
=
normal
, runs all the minimum tests plus extensive
processor and memory tests.
min
If
diag mode
=
normal
, runs minimum set of tests.