3PAR virtual volume shows 80% space used, whereas datastore shows around 57% used space.

[storageteam]

Hi All,

3PAR virtual volume shows 80% space used out of 2TB, whereas datastore shows around only 57% used space.

datastore is being used to save a critical database backups with a retention period of 2days.

Will server level defragmentation resolve this?

is there any defragmentation that can be done on 3PAR?

[PiterParker]

Hi, 

How you have deployed your Virtual Volume?

What RAID level and which provisioning technology did you choose?

Regards, 

Piotr

[yapkl]

Do review this doc:

https://www.hpe.com/h20195/v2/GetPDF.aspx/4AA3-8987ENW.pdf

and try this maybe.

To reclaim unused storage blocks on a vSphere 5.5 VMFS datastore for a thin-provisioned device, run the command: # esxcli storage vmfs unmap -l volume_label | -u volume_uuid [-n number]

[Dennis Handly]

> Will server level defragmentation resolve this?

It should if thin provisioned.

> is there any defragmentation that can be done on 3PAR?

No, the array has no idea what's free on the filesystem.