Apps and VM disk occupation

Hi,

I just updated to 25.04.01 yesterday and I was questionning myself about the disk occupation.

My Volume is on a mirrored 512Gb NVME drives.
Two datasets under it, Apps and VM.

The Truenas instances is set to this NVME volume, the Truenas Applications is et to this NVME volume too.

I imported my Zvol, set a new instance and now my VM dataset is empty. I understand it, I can’t see my Instances system occupation for the moment. Ok.

So here is the question ! The disk occupation is 290.28 GiB / 171.25 GiB while the total data I can see and reach is 99.95 GiB / 171.25 GiB.

That’s a lot of hidden datas !

I just launched a replication to see what I can’t. ix-apps seems to be the only thing my replication show me.
It is not possible that ix-apps hold 200Gb of data.

I wiped all the snapshots I had to free a bit of space, spared 70Gb.

What do you think about it ? What should I do ?