Veritas Storage Foundation 5.1 SP1 Advanced Features Administrator"s Guide (5900-1503, April 2011)

Using SF Thin Reclamation

This chapter includes the following topics:

■ Reclamation of storage on thin reclamation arrays

■ Monitoring Thin Reclamation using the vxtask command

Reclamation of storage on thin reclamation arrays

Storage Foundation enables reclamation of storage on thin reclamation arrays.

See “How reclamation on a deleted volume works” on page 118.

The thin reclamation feature is supported only for LUNs that have the thinrclm

attribute. VxVM automatically discovers LUNs that support Thin Reclamation

from thin capable storage arrays. You can list devices that are known to have the

thinonly or thinrclm attributes on the host.

See “Identifying thin and thin reclamation LUNs ” on page 117.

In this release, Storage Foundation does not support thin reclamation for disks

with the hpdisk format.

Identifying thin and thin reclamation LUNs

You can only perform Thin Reclamation on LUNS which have the thinrclm

attribute. VxVM automatically discovers LUNs that support Thin Reclamation

from capable storage arrays. To identify devices that are known to have the

thinonly or thinrclm attributes on a host, use the vxdisk -o thin list

command.

Chapter