Drobo Gen 3: Direct Attached Storage - 4 bay array  - USB 3 port. (DDR3A21)

The Drobo holds true to the unique design and simplicity that has made Drobo the best desktop storage solution for storing and protection all your data. No storage expertise is required to ensure your data is always safe and protected. Inside every Drobo is the beyondraid storage technology that protects data against a hard disk crash, yet is simple enough for anyone to use. As long as you have more than a single disk in Drobo, all data on Drobo is safe no matter which hard disk fails. THERE'S no need to worry about anything else.