IIRC the 9144
is a 16 track unit, the 9145 is similar but 32 track.
Correct. FWIW The 9145 can read but not write 9144 tapes. I've given up
on the 9145s, I can never find tapes for them. FWIW2 the older HP 9142
tape drive could format it's own tapes.
I think the 9142 uses one of the standard QIC formats, possible QIC24.
-tony