SCSI sense: HARDWARE FAILURE asc:44,0 (Internal target failure)

...
Oct 30 17:13:48 NAS (da0:mpt0:0:0:0): CAM status: SCSI Status Error
Oct 30 17:13:48 NAS (da0:mpt0:0:0:0): SCSI status: Check Condition
Oct 30 17:13:48 NAS (da0:mpt0:0:0:0): SCSI sense: HARDWARE FAILURE asc:44,0 (Internal target failure)
Oct 30 17:13:48 NAS (da0:mpt0:0:0:0): Actual Retry Count: 3
Oct 30 17:13:48 NAS (da0:mpt0:0:0:0): Retrying command (per sense data)
Oct 30 17:13:48 NAS (da0:mpt0:0:0:0): READ(10). CDB: 28 00 00 70 9e 0c 00 00...