Appreciate the reply! I've been snooping around and testing my google-fu and it appears likely that these will indeed swallow larger drives and be able to use them after you patch the firmware at least. Since firmware is readily available for them I'll probably just buy a couple of cheap drives, then patch the firmware first and then just try to see if it swallows some terabyte drives. Worst case scenario - it doesn't work and I replace the old drives, as near as I can figure.