topic Re: Discrepancy with the available space between Aggregates, Volumes and LUN's in ONTAP Discussions

Discrepancy with the available space between Aggregates, Volumes and LUN's

Yahikochan1 — Wed, 04 Jun 2025 22:26:07 GMT

Greetings,

Recently I started to manage a NetApp FAS2220 and I notice the following situation. The LUN that hold some of our VM's said that we have 287GB available but the volume that contains the LUN says it have 521Gb of available space. Where are those 200+GB lost?

Additional Info

The volume dont have any snapshot.
The LUN is Thin Provisioned
The Volume is Thin provisioned
The Volume have Storage Efficiency turned on
The volume runs deduplication every monday
The volume Automatically delete older Snapshot copies
Support Unicode format for directories. Required during CIFS or NFS access.
Update access time when a file is read

Re: Discrepancy with the available space between Aggregates, Volumes and LUN's

SeanHatfield — Thu, 24 Dec 2015 06:40:05 GMT

On the Volumes screen, select the volume containing your lun and click on the storage efficiency tab at the bottom. Have a look at the total savings field.

Blocks freed by storage efficiency appear as free space at the volume level, but do not reduce the space allocated to the thin provisioned LUN.

Re: Discrepancy with the available space between Aggregates, Volumes and LUN's

Yahikochan1 — Thu, 24 Dec 2015 13:56:32 GMT

I dont see the option you mention.

Re: Discrepancy with the available space between Aggregates, Volumes and LUN's

asulliva — Thu, 24 Dec 2015 14:08:21 GMT

It is on the volume details portion of the screen, at the bottom: