Chapter 12. Troubleshooting240 3ware Serial ATA RAID Controller User Guide004D Battery temperature is too highThe Battery Backup Unit measures and evaluates the battery packtemperature on a continuous basis. If the temperature is too high to operate,this message will be posted. You should check that there is enough airflowaround the Battery Backup Unit. When this event happens, the BatteryBackup Unit becomes not ready and is unable to backup the 3ware RAIDcontroller. You 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 andmay result in the battery temperature being exceeded.004E Battery capacity test startedThis message is posted when the Battery Backup Unit starts a battery test. Thetest estimates the battery capacity in hours, which is how long the BatteryBackup Unit can back up the 3ware RAID controller. This test performs a fullbattery charge/discharge/re-charge cycle and may take up to 20 hours tocomplete. During this test the Battery Backup Unit cannot backup the 3wareRAID controller; all units have their write cache disabled until the testcompletes.004F Cache synchronization skippedThe 3ware RAID controller performs cache synchronization when systempower is restored following a power failure. This message is posted when thecache synchronization was skipped and write data is still being backed up inthe controller cache. This can occur if a unit that was present before the powerfailure was physically removed or became inoperable before system powerwas restored.0050 Battery capacity test completedThis message is posted when the Battery Backup Unit completes a batterycapacity test. All units will have their write cache settings restored to theiroriginal values since the Battery Backup Unit is now able to backup the 3wareRAID controller.0051 Battery health check startedThe Battery Backup Unit periodically evaluates the health of the battery andits ability to backup the 3ware RAID controller in case of a power failure.This message is posted to the host when this health check is started.
