>     Pat,
>     I suggest you test this to make sure you won't have any problems.  We
>     are running an mvs adsm server and thought this would be a good idea
>     since we were running out of slots in our atl.  We ejected tapes that
>     hadn't been mounted recently.  We thought we would get prompted to put
>     the tapes back in the atl if adsm wanted to use them.  I don't
>     remember exactly what happened but we never got a prompt to put the
>     tapes back in the atl. I reported the problem to IBM and was told that
>     was the only way they could do it.

aix adsm server, 3.1.2.15, prompts to the mount console and responds to a 
"query request":

06/22/99   08:17:40      ANR8765I 272: 3590 volume M00250 in location taperack 
is
                          required for use in library MAGSTAR3494; CHECKIN
                          LIBVOLUME required within 60 minutes.

Richard