PerfectStorage ESXi Host Reclaim works in conjunction with PerfectStorage to ensure that your valuable disk space can be reclaimed in VMware thin-provisioned environments.

When vMotion is used to move a guest vmdk to another datastore or PerfectStorage is used to shrink a thin provisioned guest vmdk, the ESXi host doesn't doesn't automatically notify the storage controller that the clusters freed up by moving/shrinking the vmdk are no longer in use and can be reclaimed.

PerfectStorage Host Reclaim allows you to:

• Easily immediately perform a datastore reclaim operation
• Easily schedule a datastore reclaim operation to run in the future

The reclaim operation signals the underlying storage controller for the datastore that free space no longer used in the datastore can be reclaimed at the LUN.  PerfectStorage Host Reclaim is optimized for HP 3PAR, XtremIO and Pure Storage storage controllers so that datastore reclaims are performed according to the best practices/recommendations of these vendors.