Please note this item includes 4 x 1tb 25inch notebook hard drivesr r r it is a drobo so by definition easy to use now it is also the fastest portable storage array with cutting edge thunderbolt and usb 30 connectivity and innovative use of solid state drives ssds with an additional slot for msata ssd so whether you are working at your desktop shooting and editing photos or videos onsite or traveling to the next location it is the worlds first high performance and protected