try changing the RAID controller and see if it still fails:
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[ 97.362565] hdb: task_pio_intr: status=0x51 { DriveReady SeekComplete Error }
[ 97.362576] hdb: task_pio_intr: error=0x04 { DriveStatusError }
[ 97.362583] hdb: possibly failed opcode: 0xa1

2012/08/10 02:49:53|The system was not shutdowned properly. It could lead to file system corruption. It is recommenced to run \"Repair file system on LV (Logical Volumes)\" in Console Tools (ALT+CTRL+X) to avoid possible data corruption.
2012/08/11 01:32:29|The system was not shutdowned properly. It could lead to file system corruption. It is recommenced to run \"Repair file system on LV (Logical Volumes)\" in Console Tools (ALT+CTRL+X) to avoid possible data corruption.
2012/08/12 00:45:27|The system was not shutdowned properly. It could lead to file system corruption. It is recommenced to run \"Repair file system on LV (Logical Volumes)\" in Console Tools (ALT+CTRL+X) to avoid possible data corruption.
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