I was under the impression that reclamation only affected full volumes, not filling ones. I have had backups fail because of lack of space when % utilization was relatively low but % migratable was high. I checked the reclaim stgpool help info and it does not say it excludes filling tapes. Am I just wasting time and delaying expiration/reclamation with the move data process? Maybe TSM is so easy to administer I'm just trying to make it more interesting?
Confused, Jim -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[email protected]] On Behalf Of Shawn Drew Sent: Thursday, March 10, 2011 12:22 PM To: [email protected] Subject: Re: [ADSM-L] Does Move Data recover space on virtual volumes? Why wouldn't normal reclamation be used for this? It's the automatic "move data" intended to consolidate empty space. As long as expiration is running on both source and target server space will be reclaimed. Regards, Shawn ________________________________________________ Shawn Drew Internet [email protected] Sent by: [email protected] 03/10/2011 11:15 AM Please respond to [email protected] To ADSM-L cc Subject Re: [ADSM-L] Does Move Data recover space on virtual volumes? Yes. I use 'move data' to consolidate virtual filling volumes and reduce 'Pct Migr' in the storage pool. Judging by the time taken to move data, empty space is not moved. After the data is moved off of the volume it becomes a scratch volume. Jim Schneider -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[email protected]] On Behalf Of Keith Arbogast Sent: Thursday, March 10, 2011 10:08 AM To: [email protected] Subject: [ADSM-L] Does Move Data recover space on virtual volumes? We are running TSM 6.2.2.2 on RHEL 5. It is my understanding that all the space used by a virtual volume is kept until every file on it has been expired. Virtual volumes don't shrink in size, just like physical cartridges, even though their pct_utilization may go down. Therefore, if some file in a virtual volume never goes inactive, that virtual volume will live forever and all its space be indefinitely unreclaimable. Are my starting point, and its consequences correct? If not, please correct my misunderstanding. If virtual volumes with expired files don't shrink, does 'move data' on a virtual volume recover empty space like it does on a physical cartridge? Or, does the empty space get moved too? Move data is not an efficacious solution to this problem. Is there a better one? With my thanks, Keith Arbogast Indiana University This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Please note that certain functions and services for BNP Paribas may be performed by BNP Paribas RCC, Inc.
