Reclamation with virtual volumes

[noodles]

Hi,

another one for Virtual Volumes:

When I would like to use reclamation for DRM-Pools respectively virtual volumes what is best practice:

1. Run reclamation on the pool on the source server?
2. Run reclamation on the target server on the archive pool (LTO3 library)

Thanks in advance and regards
/noodles

 

[noodles]

Hi,

no ideas?
I would be very interested in how others handle reclamation for virtualvolumes, source- and targetpools.

Thank you

regards
/noodles

 

[staham]

I'm pretty certain that you need to run reclamation in BOTH locations.

We have two TSM servers in two different locations. The one in the remote location just contains a large FILE (sequential disk file) storage pool. The local server uses this as a copy pool using virtual volumes.

As it's just disk, we run reclamation using thresholds, so TSM starts reclamation automatically when needed.

Reclamation on the local server reclaims the virtual volumes (by copying data from the source to dest (remote) server onto new volumes). The remote server sees these volumes only as archived files. Deleted virtual volumes aren't physically deleted until remote server runs expiration.

Reclamation on the remote server is then run to reclaim space on the physical volumes (no matter if they're on disk or tape).