B&H Photo-Video offers the Drobo 4-Bay Firewire 800 / USB 2.0 Robotic Hard Drive Storage Array, model no. DR04DD10, for $269 with free shipping. That's the lowest total price we could find now by $11, although it was briefly $46 less in January. This enclosure allows you to manage, protect, and scale storage for your PC or Mac. It accepts up to four Serial ATA drives of differing capacities from different manufacturers, with a maximum of 16TB total.