OS Automatic
reboot/restart after
crash setting
Service processor to
use OS-Defined
restart policy?
Service Processor
Enable supplemental
restart policy?
System response
None No No
1
None No Yes Restarts
None Yes
1
No
1
None Yes
1
Yes Restarts
False
2
No No
1
False
2
No Yes Restarts
False
2
Yes
1
No
1
False
2
Yes
1
Yes
True No No
1
True No Yes Restarts
True Yes
1
No
1
Restarts
True Yes
1
Yes Restarts
1
service processor default
2
AIX default
Configuring and Deconfiguring Processors
The models S80 and S85 systems feature Repeat-Gard, an enhanced error detection
and prevention function. This function allows the system to deconfigure processors from
the system configuration if a processor has an unrecoverable error, or repeating
recoverable errors.
If a processor is deconfigured, it remains offline for subsequent reboots until the faulty
processor hardware is replaced. The Repeat-Gard function also allows users to
manually deconfigure a processor, or re-enable a previously deconfigured processor.
See page on page 458 for a description of the service processor menus used to
configure or deconfigure a processor.
Processor Deconfiguration During Boot
Processor deconfiguration during system boot is controlled by the system firmware that
enables removal of processors from the system configuration. If a processor has a
failure that occurs during tests that are performed during the system boot, or if the
processor has had prior unrecoverable or recoverable errors, it will be removed from
the system configuration. The system uses existing hardware Built-in Self-Tests (BIST)
and/or the firmware Power-On Self-Test (POST) to discover and isolate processor
hardware failures during the system boot. Using the hardware error-detection logic in
the processor, the system captures recoverable and unrecoverable error indications that
occurred during prior system operations.
With Repeat-Gard, the processor card can detect and isolate errors. This capability,
along with the error-recording facility of the service processor, allows for the recording
of significant fault information. This information is recorded when a processor has
Chapter 7. Service Processor Menus 473
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