IBM @Server pSeries 630 6C4, Service Manual

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Use the system reset string option to enter the system reset string, which resets the machine when it is
detected on the main console on Serial Port 1.
After serial port snooping is correctly configured, at any point after the system is booted to the operating
system, whenever the reset string is typed on the main console, the system uses the service processor
reboot policy to restart.
Because pressing Enter after the reset string is not required, make sure that the string is not common
or trivial. A mixed-case string is recommended.
v Scan Log Dump Policy
A scan dump is the collection of chip data that the service processor gathers after a system malfunction,
such as a checkstop or hang. The scan dump data may contain chip scan rings, chip trace arrays, and
SCOM contents.
The scan dump data are stored in the system control store. The size of the scan dump area is
approximately 4 MB.
During the scan log dump, A8xx (in the range A810 to A8FF) displays in the operator panel. The xx
characters will change as the scan log dump progresses. If the xx characters do not change after five
minutes, the service processor is hung and must be reset.
When the scan log dump is complete, depending on how the reboot policy is set, the system will either:
– Go to the standby state (and the service processor menus will be available), indicated by OK or
STBY in the operator panel
OR
– Attempt to reboot.
Scan Log Dump Setup Menu
1. Scan Log Dump Policy:
Currently As Needed
2. Scan Log Dump Content:
Currently As Requested
3. Immediate Dump
98. Return to Previous Menu
0> 1
Select from the following options:
(As Needed=2, Always=3)
Enter New Option:
0>
The scan log dump policy can be set to the following:
2 = As Needed
The processor run-time diagnostics record the dump data based on the error type. This is the
default value.
3 = Always
Selecting this option allows the service processor to record a scan log dump for all error types.
The scan log dump policy can also be set from the Tasks menu in the AIX service aids.
370
Eserver
pSeries 630 Model 6C4 and Model 6E4 Service Guide