-----Original Message----- From: ADSM: Dist Stor Manager [mailto:[email protected]] On Behalf Of Wolfgang J Moeller Sent: Friday, March 12, 2010 8:51 AM To: [email protected] 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
