The ioSafe 16TB Duo RAID 1 USB 3.2 Fireproof/Waterproof Desktop Storage is a 2-bay RAID system that instantly creates redundant copies of your data--all while shielding that data from fire and water. Like other ioSafe products, the Duo uses patented fireproof and waterproof technology to create the fastest way for you to be back in action after a catastrophe.