topic Storage Volume Discrepancies in Array Performance and Data Protection

Storage Volume Discrepancies

jimvad — Fri, 29 Oct 2021 05:01:13 GMT

I've got a data storage volume that states usage is 14.4TiB of 15TiB. When reviewing the actual "drive" associated to the volume it shows 7.45TB free. What exactly am I missing on this? Thanks!

Re: Storage Volume Discrepancies

Chandramohan_r — Mon, 25 Oct 2021 00:39:42 GMT

Hi @jimvad

It may be something to do with the zero-page reclamation (ZPR). You might want to run the unmap/trim on the filesystem in question to reflect the capacity on the storage array.

Further information can be found here.

https://infosight.hpe.com/InfoSight/media/kb/active/sup_KB-000065_Block_Reclamation.pdf

Re: Storage Volume Discrepancies

ksram — Tue, 26 Oct 2021 01:50:39 GMT

Hi jimvad,

Good day!

Could you please elaborate the issue.

Are you referring to 15TB Drive or is this a logical drve of 15TB Volume, and where is the Volume shows as 7.4TB (which application)

Thank you

RamKS