Suspect media first, as it is the weak-link, that is, if the unit has been running well for the last 5 months.Most drive manufacturers have their own diagnostic software to run on their drives, so don't be afraid to use it. Just remember that most a...
I'd be interested in finding out if the tape device driver was updated. Certainly an option would be to attempt using the OEM's Tape device driver (HP, IBM, etc), run Tapeinst.exe, leaving the manufacturers driver in place, and see if speed/capacity...