Probably power supply issue

Finally getting back to this. Disassembled the unit today. The back of the unit says ReadyNAS RND4000 v3. The PSU is internal (or was, it's external now since I disassembled it! :) ) After much casting about I've ordered a replacement PSU from Evercase in the UK: http://www.evercase.co.uk/PowerSupplyUnits.htm#ReadyNASPSU. $100 with shipping but the data is priceless. Assuming this works I'll be dumping everything to ... something... and then looking for a new (and faster) unit. Unless NetGear does something about the backward compatibility with disks in its newer units I'll be looking elsewhere. So please tell me that moving forward I can be assured of pulling disks from a unit and having them work in a newer unit (yeah, yeah, within reason of course - but there's no reason that my 5 year old 2T drive should not be supported.) So, enough bitching and whining. When the new PSU arrives I'll update with what happened.