3Ware 7000-2 User Guide - Page 181

Troubleshooting AEN 008h AEN_UNCLEAN_SHUTDOWN The ATA RAID controller has the ability to detect if the system has been shutdown via the standard shutdown mechanism of the operating system (clean shutdown). If the system loses power or is reset without going through the normal shutdown procedure, it is possible that the data on a redundant array may be out of synchronization. The unclean shutdown detection will detect this case and force the array to enter the rebuilding state. This has the effect of synchronizing the array back to a fully redundant state. To prevent unclean shutdowns, the user should always go through the normal shutdown procedure for the operating system in use and use an uninterruptible power supply (UPS) to prevent unclean shutdowns due to sudden power loss. AEN 009h AEN_APORT_TIMEOUT The ATA RAID controller has a sophisticated recovery mechanism to handle various types of failures of a disk drive. One such possible failure of a disk drive is a failure of a command that is pending from the ATA RAID controller to complete within a reasonable amount of time. If the ATA RAID controller detects this condition, it notifies the user, prior to entering the recovery phase, by displaying this AEN. Possible causes of APORT time-outs include a bad or intermittent disk drive, power cable or ATA interface cable. AEN 00Ah AEN_DRIVE_ERROR As part of the recovery mechanism of the ATA RAID controller, various drive failures can be detected and if possible corrected. One such drive failure is when the drive indicates back to the ATA RAID controller that it was unable to complete a command. If the drive returns an error to the ATA RAID controller, the user is notified by this AEN. www.3ware.com 181