I've recently had a problem with a external tape drive that we purchased. We originally tried using an older SCSI adapter (Ultra2 I believe?) and the drive showed up in the adapters BIOS, as well as Windows, however, anything that tried to use the tape drive would lock up and you would see communication errors in the Server 2003 event log.
After reading around, a lot of people said it needed a Ultra320 SCSI host adapter card, even though the documentation says it only needs a Ultra160. So, we purchased a nice expensive Ultra320 card from adaptec and the tape drive shows up in the adapters BIOS, but will not show up in Windows at all.
The Adapter shows up in Windows and has all the drivers installed.
One other thing I was looking at is on the manual it shows a SCSI terminator on the single device configuration (there is only one device on this SCSI host adapter), however, I was under the impression you did not need a SCSI terminator for a single device configuration on these tape drives?
Any help would be appreciated.