The G-Technology G-RAID with Thunderbolt hard drive helps you get the most out of your professional content-creation applications. It's 12 times faster than FireWire 800, with raw speed that other I/O interfaces can't match.
Brand new in box, never opened. Apple Canada sells it for $599 + tax
http://store.apple.com/us/product/H8248VC/A/g-tech-4tb-g-raid-thunderbolt-hard-drive?