I found this article on Veritas website:
http://tinyurl.com/xscp
It talks about getting the following error when Backup Exec 7.5, 8.0 and/or 8.5 on Netware when using an HP SureStore tape drive:
"A hardware error has been detected during this operation. This
tape should not be used for any additional backup operations.
Data written to this tape prior to the error may still be restored.
SCSI bus timeout can be caused by a tape drive that needs
cleaning, a SCSI bus that is too long, incorrect SCSI
termination, or a faulty device. If the drive has been working
properly, clean the drive or replace the tape and retry the
operation.
Vendor: XXX
Product: XXX
ID: ??
Firmware: XXX
Function: Write(5)
Error: Timeout(1)
Sense Data:
00 00 00 00 - 00 00 00 00 - 00 00 00 00 - 00 00 00 00
00 00 00 00 - 00 00 00 00 - 00 00 00 00 - 00 00 00 00"
Basically, the article says that the SCSI type connected to the tape drive is the very high density cable interconnect (VHDCI) type. The fix is to buy an adapter to change to low density type.
Now, I use an IBM 3580 tape library and TSM, and my SCSI connections are all low density. Low density give you the ability to use longer cables. For me, my tape drive is 50 feet from my server, so I needed the longer cable length, hence the LD type.
Anyway, read the article and give it a shot.
hope this helps