Service Processor Operational Phases - IBM RS/6000 Enterprise Server M80 Service Manual

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 first connected to a power source. This phase is exited when the
power-on self-test (POST) and configuration tasks are completed.
The pre-standby phase components are:
v Service processor initialization - the service processor performs any necessary hardware and firmware
initializations.
v Service processor POST - the service processor conducts power-on self-tests on its 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 a power-on command, but moves through the phase and into the bring-up phase. Access the
system management services (SMS) menus or the service processor menus to reset the unattended
start mode.
Standby Phase
The standby phase can be reached in either of the following 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 an 8-digit code in the LCD display.
In the standby phase, the service processor takes care of some automatic duties and its menus are
available. The service processor remains in the standby phase until a power-on request is detected.
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Service Guide
SP Power Applied
Pre-Standby Phase
Standby Phase SP Menus Available
Bring-Up Phase SMS Menus Available
Run-time Phase Operating System Login Prompt Available