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HUS130 Reclaim Zero Pages

Question asked by B082X3QA on Oct 9, 2017
Latest reply on Oct 26, 2017 by Paul Parris


We have a HUS 130. I have a volume dedicated to one Windows VM server and presented to VMware as a datastore for this VM server to exclusively use. VMware is reporting the datastore as over-provisioned (689gb on a 600gb datastore). As such our backup (using snapshots) cannot back this VM up as it says "no space available on the datastore".

We cleaned/deleted about 100gb on the Windows VM itself. Problem is, VMware is still showing the datastore as over-provisioned (still at 689gb on a 600gb) and Hitachi HSNM2 is showing a lower 547gb used capacity. Total Reclaimable space is only reflecting 1.0gb as it was before we deleted 100gb from the VM server.

Will selecting Optimize DP - Reclaim Zero Pages option work in this case? Will running RZP impact IO/performance on the lun in any way?

If not, how do I get VMware to accurately reflect the newly cleaned space as well as HUS 130 on the datastore/lun?

Thank you.