IBM 265, Service Manual

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Service Processor Operational Phases
This section provides a high-level flow of the phases of the service processor.
Pre-Standby Phase
This phase is entered when the server is connected to a power source. The server may
or may not be fully powered on. This phase is exited when the power-on self-tests
(POST) and configuration tasks are completed.
The pre-standby phase components are:
v
Service processor initialization - Performs any necessary hardware and software
initializations.
v
Service processor POST - Conducts power-on self-tests on its various work and
code areas.
v
Service processor unattended start mode checks - To assist fault recovery. If
unattended start mode is set, the service processor automatically reboots the server.
The service processor does not wait for user input or power-on command, but moves
through the phase and into the bring-up phase. Access SMS menus or service
processor menus to reset the unattended start mode.
Standby Phase
The standby phase can be reached in either of two ways:
v
With the server off and power connected (the normal path), recognized by
OK
in the
LCD display
OR
v
With the server on after an operating system fault, recognized by
STBY
or an 8-digit
code in the LCD display.
In the standby phase, the service processor handles some automatic duties and is
available for menu operation. The service processor remains in the standby phase until
a power-on request is detected.
The standby phase components are as follows:
v
Modem configuration
SP Power Applied
Pre-Standby Phase
Standby Phase SP Menus Available
Bring-Up Phase SMS Menus Available
Run-time Phase AIX Login Prompt Available
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Service Guide