I’m running NT4 sp6a using an Adaptec 29160 SCSI adapter to host 2 NT software RAID 0. Each RAID consists of 4 drives in an external case. The RAID boxes are daisy chained using Ultra SCSI cables. The problem is drives are going off-line. All drives are 18GB IBM SCSI LVD drives. I’ve updated the firmware for the IBM SCSI drives. When attempting to capture video to either RAID, usually a drive will stick and I get the error “system process, lost / delayed write data, the system was attempting to transfer file data from buffers to device \hardisk2\partition1\$Mft””. This error occurs randomly on any of the 8 drives. In the event viewer, I get event id 9 & 11. According to Microsoft TechNotes, this could be a SCSI cabling, termination, failed device, or bad drivers. I’ve installed all the latest from IBM for the hard drives. I have the latest Ultra160 drivers for the 29160 card. BIOS is disabled on the 29160 because I have no boot device attached. I do have a physical LVD/SE terminator at the end of my external SCSI chain. I’ve upgrading the cable that attaches the 2 RAID boxes. I’m still getting the errors. Some things I suspect, but can’t be certain are the 29160 card is going bad, maybe exceeding cable length, or IBM hard drives are crap. I thought cable length for LVD was 15 devices at 32 feet. My cable from CPU case to 1st RAID is 3 ft. Cable from 1st RAID to 2nd RAID is 3 ft. Add in internal cabling & I get close to 32ft, but don’t think I exceed it. Are there any good troubleshooting or testing of the Adaptec 29160 card? Is there some registry hack for a timeout period? Any other troubleshooting methods or suggestions? Thanks!