Avago Technologies 3ware SAS 9750-16i4e - Manual (Page 288)

Chapter 12. Troubleshooting
276 3ware SATA+SAS RAID Controller Card Software User Guide, Version 10.2
005C Battery is weak
Event Type
Warning
Cause
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 message is posted when the result of the health test is below the warning
threshold.
Action
Replace the battery pack if warnings persist.
005E Cache synchronization completed
Event Type
Information
Cause
The 3ware RAID controller performs cache synchronization when system
power is restored following a power failure. This message is posted for each
unit when the cache synchronization completes successfully.
You will also see this message if drive insertion causes a unit to become
operational and retained write cache data was flushed.
005F Cache synchronization failed; some data lost
Event Type
Error
Cause
The 3ware RAID controller performs cache synchronization when system
power is restored following a power failure. The cache synchronization was
not successful for some reason.