Unraid ZFS pool expansion

I have a ZFS Raidz pool with 3 drives. When I setup the pool I set it up with 6 slots. I am now attempting to add another 20TB drive to expand storage and I am encountering an error. Is there no way to expand a ZFS pool in unraid? I am running 6.12.6. The current pool is over 70% full and way larger than my main array so I have no way to back this up and recreate a new pool. Help Please 🙏

By Smasher, February 7
6 replies

I'm sorry, I didn't read the 1st post correctly, you cannot expand a zfs raidz pool by adding a single device, this is a zfs limitation, not Unraid, Unraid allows you to expand a raidz pool by adding a new vdev with the same width, in this case you would need to add 3 new disks.