As above, I'm experiencing extremely slow balancing speeds of around 4 MB/s when I've added in another new disk to my pool Burst testing with scanner and directly copying the files in windows results in speeds of around 150 MB/s which is as I'd expect The pool is 3 x 10TB WD external drives connected by USB 3. I've tried clicking the forward arrow to increase the priority and ot doesn't so alot   Any help would be appreciated as I have alot of data to move and dont fancy baby