3Ware 9550SX-4LP User Manual page 251

AEN Messages
05Ch Battery is weak
The Battery Backup Unit periodically evaluates the health of the battery and
its ability to backup the 3ware RAID controller in case of a power failure.
This AEN is posted when the result of the health test is below the warning
threshold. This indicates that the battery pack should be replaced soon
because the battery is becoming weak.
05Dh Battery health check failed
The Battery Backup Unit periodically evaluates the health of the battery and
its ability to backup the 3ware RAID controller in case of a power failure.
This AEN is posted when the result of the health test is below the fault
threshold. This indicates that the battery pack must be replaced. The Battery
Backup Unit becomes not ready and is unable to backup the 3ware RAID
controller.
05Eh Cache synchronization completed
If drive insertion causes unit to become operational this will be sent if retained
write cache data was flushed.
The 3ware RAID controller performs cache synchronization when system
power is restored following a power failure. This AEN is posted for each unit
when the cache synchronization completed successfully.
05Fh Cache synchronization failed; some data lost
The 3ware RAID controller performs cache synchronization when system
power is restored following a power failure. This AEN is posted when cache
synchronization was not successful for some reason.
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