G-Technology's 2TB spare hard drive for the new STUDIO series including the G-SPEED STUDIO, the G-SPEED STUDIO XL, and the G-RAID STUDIO is a hot-swappable Enterprise-class hard module. It should be kept on hand in case of a failure, and can be used as a spare drive under any circumstances. We suggest keeping at least one spare drive on hand to minimize downtime in the event of a failure.