There is a problem with Rorke drive enclosures, that can cause data corruption and other problems with drive. At this time there is no work around for this problem. Rorke has recognized the problem and users with these issues should contact Rorke for further assistance. Make sure everything else is up to spec on the SCSI subsystem i.e: firmware on ATTO HBA, drives formatted with Express 2.3.2 and not FWB, proper termination, SCSI cable lengths, etc.