I am using collocated primary pools an a non-collocated offsite pool.

My apparently incorrect assumption is that if multiple processes are
going to work on the list of tapes to be reclaimed, then for offsite
tapes the list of needed files would be sorted and processed in a way so
that each thread would handle all the data on a given tape.

I'm going to open a call with IBM to have this clarified.

Thanks.

Mark Stapleton wrote:

"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 02/27/2006
11:55:42 AM:

Has anyone out there tried the new 5.3 multi-threaded reclamation
process for offsite copypools?

In both cases, within a few minutes of processing, all the reclamation
processes for this pool are competing for the same input volume, so one
process continues and the others stall with media wait.

The documentation doesn't say to not use the parameter for offsite copy
pools, so I'm wondering if this is a bug or working as designed.  If
working as designed, then it is pointless for offsite pools.

Well, not exactly. As is mentioned by others, using this for offsite pool
reclamation with collocated primary tape pools will minimize the tape
volume contention (but may increase the number of tape mounts).

But hey! if you run any three tape processes, and they all need data off
the same volume, there's going to be contention no matter how you slice
it.

--
Mark Stapleton (mark.stapleton AT usbank DOT com)
US Bank
MR Backup and Recovery Management
Office 262.790.3190
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