Tk50 tapes, the TZ30 is, IMHO, a bit more reliable than the generic TK50. 
It is also a SCSI version rather than the TK50 bus version. I use one in an 
expansion box when I really need to write a TK50 tape.
--Chuck

At 10:57 AM 6/11/01 -0400, NetBSD Bob wrote:
> > > I have run across a DEC tape drive in an external storage chassis
> > > that looks like it holds a TK50 sized tape, but the drive appears
> > > to be half height, and has a handle that swings across the front
> > > back and forth rather than one that lifts up like the TK50/Tk70.
> > > Anyone know what this kind of tape transport is?  I did not see
> > > a model number, in the dim light where the thing was, and the
> > > chassis did not indicate anything.
> >
> > sounds like a TZ30 to me.
>
>OK... what kinds of tapes can be used in it?
>
>Bob