Hi all, I'm thinking of getting this external drive for my iMac + Macbook Air setup... This one to be specific: http://www.apple.com/shop/product/H...rsche-design-usb-c-mobile-hard-drive?fnode=4c (4 tb version) My question: I have a 2 tb external drive (with power supply etc). I have filevault enabled on that one and don't notice any negative influence from the encription. Will this be different on this new mobile drive? Which doesn’t' have its own power supply and runs at 5400 rpm? The connection is much faster than my current usb 2, but my current drive runs at 7200 rpm... Any insights for someone a little more technical then me would be very appreciated!