The Internet is full of movies, music, photos, available for download. So many goodies but so little storage space. The Drobo-4 is an enclosure that holds up to 4 of your hard drives for as much storage as you want, need, or can afford.As rich media (photos, video, movies, music) continues to devour your storage capacity, you need a solution that allows you to easily manage, protect, and scale storage for your PC or Mac. For you, there's Drobo, the first fully automated storage robot to take the pain out of keeping your important digital content safe. This Data Robotics DR04DD10 Drobo enclosure accepts up to 4 internal storage SATA hard-drives (drives are not included) that you set up as an array for both primary and backup storage. Add Drobo, get 4 drives and download at will.