I noticed an error in the Create Pool dialog. It's not a show-stopper, but I figured you might want to be aware of it. We just bought a new storage unit with 60 15TiB drives. I created a pool of 6 VDEVS, 10 deep. It defaults as RAID-z3, which gives it a raw capacity of 101.86 TiB. When I changed it to RAID-z2, it bumped the capacity to 116.41TiB. However, if you use the duplicate the VDEV function, all of the duplicates are listed as RAID-z2, but the capacity is 101.86 TiB, the estimate for a RAID-z3. If you go and change the VDEV to something else and then back to z2, it fixes the estimate. I thought I would mention it. In my estimation, it is the math that is incorrect, since the system is very good about creating the pool, without the warning about having different types of VDEVs in the same pool.