I do think you can swap drives between units in the 53X family. I know you can swap drives between the 51X and 1260A units as well. But between the 53X and 51X, not likely. The file system would have been changed to support the 1 TByte hard drive. Since these units are designed to not have the hard disks swapped, reading a older format wouldn't be a priority.
I haven't seen any sectors from the new unit yet. Also, I don't have the money to get a new unit right now so it will be awhile before I could test it. Maybe next summer I'll get a referb.
Why would you say that now, when people have been swapping HDDs *almost* at will!?
ALL THE 53x UNITS HAVE THE EXACT SAME FW! What we need to know, by impartial testing, is whether that FW is any barrier to swapping HDDs from a previous unit. ONLY AFTER that testing will we be able to provide true answers to the now-inevitable "I heard... " stories.
Edited by wajo - 10/6/12 at 3:09pm