IBM @Server pSeries 630 6E4, Service Manual

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Runtime Phase
This phase includes the tasks that the service processor performs during steady-state execution of the
operating system.
v
Environmental Monitoring
The service processor monitors voltages, temperatures, and fan speeds (on some servers).
v
Responding to System Processor Commands
The service processor responds to any command issued by the system processor.
v
Run-Time Surveillance (not supported on partitioned systems)
If the device driver is installed and surveillance enabled, the service processor monitors the system
heartbeat. If the heartbeat times out, the service processor places an outgoing call. This is different from
the bring-up phase scenario, where the specified number of reboot attempts are made before placing an
outgoing call.
v
HMC surveillance
On an HMC-managed system, the service processor monitors the communication link between the
managed system and the HMC. If the service processor detects that this communication link has been
broken, it will post an error to the operating system running on the managed system.
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Eserver
pSeries 630 Model 6C4 and Model 6E4 Service Guide