Thank you. The probability that the tape will die after one pass is non-zero. With irreplaceable data that could be a problem.
Drive and adapter won't be here till next week.
p
I'm gonna look up that drive later today. I'm concerned that if a single pass can kill the tape, a lot of those tapes are linear and not helical scan, which means that the head traverses the tape multiple times (back and forth) in tracks.