ReadyNAS 4312 running out of space; free space only slightly increased after deleting data

[itcrew]

Free space of 115TB was down to 15TB. It's currently storing backups from Veeam on a LUN connected to my Hyper-V cluster. I deleted at least 15TB of backups so this should have left me with 30TB of free space - but that hasn't happened.

I've since run a defrag as well as balance and can now see 20TB of free space - instead of 30TB. No snapshots are stored/enabled so I know that's not a factor. How can i regain the extra 10TB of free space?

[StephenB]

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@itcrew wrote:

I've since run a defrag as well as balance and can now see 20TB of free space - instead of 30TB.

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The defrag might have hurt (not helped).  Though the usual scenario where it hurts is with snapshots.

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@itcrew wrote:

How can i regain the extra 10TB of free space?

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Unfortunately, all I can think of is to delete a few more backups, and re-balance?

[itcrew]

Really @StephenB ? A defrag may make things worse??? That's very counterintuitive...

I've deleted more data; I'll run the balance again and see if that improves the free space...