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
