Expanding a pool, TrueNAS Scale "dragonfish"

TrueNAS General
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Hi all,

My first post here.

I have just upgraded from TrueNAS core to TrueNAS scale Dragonfish-24.04.2.5

I have a pool of six 3TB disks (2,73 capacity), but some of the disks start to be bad and I have to replace. 3 TB I cant find, but 4 TB no problem.

So if I replace two broken 3 TB disks with for 4 TB, will the ZFS pool be able to expand so I can use the “extra” 2 TB added.

If I remember right, that was not the case with TrueNAS core, there a 4 TB disk would have been using only 3 TB.

Thank you.

Best regards,
Christer

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Standard ZFS behaviour: You’ll get the extra capacity once all drives in the vdev have been replaced. (Minding the SCALE partitioning bug…)

1 Like
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OK, when all drives are replaced.
Thank you.

4

Indeed. It looks like it’s fixed in EE. For those not using EE, see: