It is a high speed sata drive.
You can get it upgraded with the warranty intact by contacting the importer and warranty agent HTL at www.hooktech.co.nz Costs $75+gst+freight. You supply the brand new high speed drive and they do the work. At this stage they recommend only 1TB as that is recommended by Magic, but I am sure they would install a 2TB if you insisted.
I am not sure what they can do about transfering files though.
If someone can get this file transfer working without having to pull the cover off each time, we wouldn't have to worry about this :-) given time some genius will get it sorted