The 1 TB G-SAFE FireWire-800 and USB 2.0 External Hard Drive RAID 1 Array from G-Technology is an external hard drive array designed with a professional digital photography workflow in mind. The array features two 1 TB hard drive modules in a RAID 1 configuration for real-time backup of data. It connects to a computer via FireWire-800 or USB 2.0. The array features a front-panel LCD for monitoring, as well as an audible alarm that sounds in the event of drive failure.