-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT vm.marist DOT edu] On Behalf Of 
Wolfgang J Moeller
Sent: Friday, March 12, 2010 8:51 AM
To: ADSM-L AT vm.marist DOT edu
Subject: Re: [ADSM-L] Collocation Groups Reclamation and Restore

Francisco Molero writes:
>[...] I have some questions about Collocation Groups Reclamation and restore.
>
> First, my environment I have a Tape STGpool with 3 Collocation Groups and 10 
> nodes per Group.
>

> 3.- In case of migration, if we don't have CG TSM migrates files per node.
>     What happens if we have CG ?

Once a tape has been mounted for a collocation group's data, all nodes in that 
group are migrated.
At least when the source pool is of type DISK, I'd guess that files will still 
be ordered by filespace and node,
just like they are by filespace in the case of collocation by node.

Not always.  I often find volumes with a few inches used belong to a client 
belonging to a CG residing on another volume.  It certainly looks as if files 
ready for migration find the desired volume in use by another member of the CG, 
so they go to scratch.

As for reclamation, this morning I removed a client.  2 of its volumes popped 
to the top of the list of reclamation candidates (2 reclamation processes).  
One went to the expected collector.  The second went to scratch.


Fred Johanson
TSM Administrator
University of Chicago

773-702-8464