Never let a lack of space hinder your work. Instead, go for the WD My Book Duo External Storage Device. With a whopping 20TB of storage, this system commands your entire workflow. The My Book Duo stands proudly on your desk and comes in all black. All of this storage space is available with just a single included cable. In addition, the My Book Duo is RAID-0 ready right out of the box. You can reconfigure to achieve RAID-1 for redundancy. This means you can instantly create a back-up for your back-up. Alternatively, you can use the My Book Duo as two separate drives. All of these options are manageable in the WD Drive Utilities software. In addition to the massive storage space, the My Book Duo is available in varying sizes from 4TB to 16TB.