May 7, 20251 yr Hey all, currently trialing UNRAID as a long-term TrueNAS user. I'm not using the main array, so I created a ZFS pool with 12x8tb NVME drives (2 vdevs 6-wide). Dandy! Now, when I create a 2nd pool for VMs which is running on some SATA SSDs, even if I explicitly set 2nd pool to be btrfs, it will always convert to a ZFS filesystem. I'm still testing (it could be that UNRAID is just importing the drives from the 2nd pool as I might of set it to ZFS at some point during testing), but just wondered if anyone else has experience the same thing? Not sure if it's by design or not. As a workaround I found that creating my VM pool first and setting that to btrfs and then creating the 2nd pool as ZFS works, but again just wondered if this is by design or I'm doing it wrong Thanks Edited May 7, 20251 yr by Olly_K
May 7, 20251 yr Community Expert Solution 6 hours ago, Olly_K said: Now, when I create a 2nd pool for VMs which is running on some SATA SSDs, even if I explicitly set 2nd pool to be btrfs, it will always convert to a ZFS filesystem. If you are using devices that had a previous filesystem, always click the first pool device and then "erase pool" first for new pools, before selecting the new pool filesystem and layout.
May 7, 20251 yr Author Ahh it's likely that. I'm just "removing" the pool. I'll do some more testing. Gratuitous pic of the beast I'm building.
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