Depends on if there are errors on the drive. You can clone to another 8TB if the current drive is ok. I would check it before doing the clone, smart test (make sure you don't format it by mistake if using Windows) If ok clone is fine. If errors, well I would try MFST copy or even DDrescue which is also on the MFST CD (or USB if that is where you have it). Assuming you have a current version of MFST. I mean you can try a copy, if using MFST it should show errors during the copy if there are any. A cloning dock would NOT be a good idea unless you have checked the original for errors, there is no feedback with a dock, will just keep trying and trying if there are errors and could burn out the dock.I upgraded my Roamio pro to an 8 TB drive 5 years ago. The drive is starting to go bad. Can I just clone the drive to another 8tb drive (same) size and put the new drive into my roamio or do I still need to use MFS tools?