3Ware 9550SXU-16ML User Guide - Page 238
Dh Battery temperature is too high, 04Eh Battery capacity test started
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Chapter 11. Troubleshooting 04Dh Battery temperature is too high The Battery Backup Unit measures and evaluates the battery pack temperature on a continuous basis. If the temperature is too high to operate, this AEN will be posted to the user. The user should check that there is 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. 228 3ware 9550SX Serial ATA RAID Controller User Guide