I am running a MacPro 5,1 and use Ableton primarily on it - I have 4 one TB drives in it which back up each other so effectively only 2tb of data - I am running out of space on both of the drives and am wondering whether to get 2 new sata internal 2tb drives and use the spare 1tb drives in an external icybox or should I go for a completely external icybox or even eSata ? Cost isnt that much of an issue but 2 internal 2tb drives and a dual icy box will come in at around 200 quid or so but I am prepared to go above that for a "futreproof" answer.