I think I see the problem. TRAID, like raid 5 - as Traid will effectively be - does not generate a storage pool equivalent to the sum of the drives included. You will (in this case) have 22TB (ie largest drive) allocated to parity and your pool capacity will be 42TB less an amount for overheads - ie 38TB. RAID 5 needs 3 equal size drives of which effectively 1 is parity. Traid simply allocates the largest drive. If you added another 22 TB drive you would see available capacity increase by the 22TB (approx), but with 3 drives it is what it is. [In reality the parity may be striped across the drives but the capacity is determined as above].
Statistics: Posted by Gremlin — Yesterday, 21:57