On Thu, 30 Sep 2004, Zane H. Healy wrote:
    Zane>
I'd much rather have to retrieve data from a TK50 than a 4mm or
  Zane> a 8mm!
 Indeed, since DLT drives tend to have read compability going WAY
 back.  You may be able to read it on a current drive.
        paul 
 Trust me, you can't.  If you had a genuine DEC drive, up through something
 like a TK87 or TK88 can read TK50 and TK70 tapes, but the equivalent Quantum
 drives can't.  Most of the drives we have now can no longer read DLT III
 tapes, and the ones we'll be recieving in our next Library can't read DLT IV
 tapes from what I heard yesterday. 
 This is probably why I have about 10 of the
TZ85, 86, 87 and 88
drives around here, in both DSSI (TF) as well as SCSI (TZ) variants :)
Indeed, TZ85's reliably read TK50 and TK70 carts.
--f