On Wed, Sep 28, 2011 at 4:34 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
   The Tu58 was
packaged as a standalone with internal supply, same box but
 uses the hosts
 supply (variant), and it was also embedded in the VAX-11/750. 
 And the 11/730. This one has an odd layout, with one of the drives round
 the side, btu AFAIK it's the normal controller board and drives on an odd
 metal chassis. 
 
Yep.  I have one from an 11/725 we scrapped 20+ years ago (to keep an
11/730 alive at less than DEC Field Circus rates).
It's the same mechanisms but in a
one-drive-in-front-one-drive-on-the-side box.  Same controller.  Same
10-pin DEC serial cable.
I use mine for slurping up real TU58s - I think the last time I did it
I either used a DOS app or a Linux app.  Been so many years, I'm not
certain which.  I just made raw block copies of the tape contents and
worried about file extraction on a VAX with EXCHANGE or some such.
-ethan