"It depends".
If you put RESOURCEUTILIZATION 10 in your dsm.opt file, it will force TSM to
start more concurrent sessions.
But if you want to control which drives restore concurrently, open more
sessions and start them one at a time.



On Tue, Apr 22, 2008 at 12:07 PM, Gill, Geoffrey L. <
GEOFFREY.L.GILL AT saic DOT com> wrote:

> > IMHO one of the  things you need to consider is how long the migration
> > processes will take.
>
> I have done that and use collocation groups already so I understand the
> ramifications of this, but those are not my questions. My questions are
> more specific to restores and was wondering if a single session with 4
> drives checked to restore will mount 4 tapes immediately or will they
> possibly be single threaded and one drive at a time is truly what is
> happening. If not has anyone tested this and compared to 4 sessions
> restoring a single drive with each session to see if there is any
> difference in the amount of time it takes to restore the data?
>
> Geoff Gill
> TSM Administrator
> PeopleSoft Sr. Systems Administrator
> SAIC M/S-G1b
> (858)826-4062
> Email: geoffrey.l.gill AT saic DOT com
>