We find the compromise to just having collocation on to work well for us.

We have collocation on but keep the number of tapes available to be
roughly half to 1/3 of the users in the system.   So ADSM 'doubles up'
the tapes putting 2 or sometimes 3 users on a tape.

So we have collocation but with only 1/3 of the tapes needed and requested.


...joe.f.