Can anyone think of a way to partition a 4-drive DLT tape robot so that one
set of tapes always gets loaded on 2 specific drives (e.g., DRIVE1 and
DRIVE2), but a different set of tapes always gets loaded in the other 2
drives (e.g., DRIVE3 and DRIVE4)?  One set of tapes would be newly added.
The other set are pre-existing tapes containing user data.

The robot is a Breece Hill Q47, the drives are DLT 4000s.

Thanks for any ideas.
.Paul