WD My Book Studio 2TB External Desktop Hard Drive
http://www.amazon.co.uk/dp/B004VDR5Q4?tag=dedik-21
Feature
* Pure performance for Mac with firewire 800
* Cool-to-the-touch aluminium enclosure complements your Mac
* Compatible with Apple Time Machine
* WD Smartware for automatic, continuous backup software

http://www.amazon.co.uk/dp/B004VDR5Q4?tag=dedik-21