3Ware 9550SX-4LP User Manual page 249

AEN Messages
enough airflow around the Battery Backup Unit. When this event happens, the
Battery Backup Unit becomes not ready and is unable to backup the 3ware
RAID controller. The user must replace the battery pack if the temperature
error persists. The use of a PCI card in the slot adjacent to the BBU is not
recommended and may result in the battery temperature being exceeded.
04Eh Battery capacity test started
This AEN is posted when the Battery Backup Unit starts a battery test. The
test estimates the battery capacity in hours, which is how long the Battery
Backup Unit can back up the 3ware RAID controller. This test performs a full
battery charge/discharge/re-charge cycle and may take up to 20 hours to
complete. During this test the Battery Backup Unit cannot backup the 3ware
RAID controller; all units have their write cache disabled until the test
completes.
04Fh Cache synchronization skipped
The 3ware RAID controller performs cache synchronization when system
power is restored following a power failure. This AEN is posted when the
cache synchronization was skipped and write data is still being backed up in
the controller cache. This can occur if a unit that was present before the power
failure was physically removed or became inoperable before system power
was restored.
050h Battery capacity test completed
This AEN is posted when the Battery Backup Unit completes a battery
capacity test. All units will have their write cache settings restored to their
original values since the Battery Backup Unit is now able to backup the 3ware
RAID controller.
051h Battery health check started
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 to the host when this health check is started.
052h Battery health check completed
The Battery Backup Unit evaluates periodically the health of the battery and
its ability to backup the 3ware RAID controller in case of a power failure.
This AEN is posted to the host when this health check has completed.
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