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Maintenance Commands and Trouble-Clearing Aids
555-233-123 8-282 Issue 4 May 2002
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The standby processor must be in service with shadowing enabled, so that
the system can save announcements to the standby processor.
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When MSS devices on both processors in High or Critical Reliability
Systems are specified, the save announcements command saves
announcement data from announcement boards to active MSS devices,
then to standby MSS devices. The system reports the status of each save
operation to users separately. When one save operation fails, the save
operation to another device continues, causing saved announcement data
to be inconsistent between MSS devices.
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In case of a failure, technicians make announcement files consistent
across both MSS devices. Files become inconsistent due to hardware
failures or spontaneous processor interchanges. If announcement files are
inconsistent due to hardware failures that occur during the save
announcements command, error messages display indicating corrective
action. Maintenance software that monitors hardware logs hardware errors
to maintenance. Then, maintenance software invoke tests to diagnose and
attempt corrective action. If maintenance software fails to correct the
problem, an alarm raises displaying corrective action.
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The save announcements command writes two time-stamped, identical
copies of announcement data to selected devices. The time-stamp for both
copies is the same. Each copy contains a timestamp and the state of the
copy (good or bad).
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If good copies of announcement files are not available, the restore
announcements command cannot execute until the save announcements
command completes. Announcements on the board are still usable.
Output
The following is a display of save announcements on a simplex SPE system.
Field descriptions
Processor
Displays processors when announcement data
writes to its devices. (spe-a and spe-b)
Command Completion Status
This field specifies if the command succeeded.
Error Code
0 = successful save
1 = could not write to active spe device
2 = could not write to standby spe device
save announcements Page 1 of 1 SPE A
SAVE ANNOUNCEMENTS
Processor Command Completion Status Error Code
SPE-A Success 0