3PAR InForm® OS 2.3.1 Concepts Guide (320-200112 Rev B, February 2010)

12.8
Thin Copy Reclamation
3PAR InForm OS Concepts Guide InForm OS Version 2.3.1
12.7 Thin Copy Reclamation
Thin Copy Reclamation is an optional feature that reclaims space when snapshots are deleted
from an InServ Storage Server. As snapshots are deleted, the snapshot space is reclaimed from a
Thinly-Provisioned Virtual Volume (TPVV) or fully-provisioned virtual volume and returned to
the CPG for reuse by other volumes. Deleted snapshot space can be reclaimed from virtual
copies, physical copies, or remote copies. The 3PAR Thin Copy Reclamation feature works on
any class of InServ Storage Server. The InForm OS automatically reclaims snapshot space if the
Virtual Copy, Remote Copy, or Thin Provisioning license is enabled. For more information about
snapshots, see Virtual Copy Snapshots on page 10.7.
12.8 Virtual Lock
3PAR Virtual Lock is an optional feature that enforces the retention period of any volume or
copy of a volume. You must purchase the 3PAR Virtual Lock license to use this feature. Locking
a volume prevents the volume from being deleted intentionally or unintentionally before the
retention period elapses. You can use Virtual Lock to specify the retention period for each
volume or copy of a volume.
NOTE: Reclaiming space when snapshots are deleted with the 3PAR Thin Copy
Reclamation feature requires the 3PAR Virtual Copy, Remote Copy, or Thin
Provisioning license. Contact your 3PAR representative for more information.