This thing is loaded and prepared to backup anything you wish to shove at it. It includes 4 x 2 TB harddrives in a Raid 0 Configuration. If you such as, you can quickly alter that to 1,5 or 10. There many various choices for this beast. It will work under both Windows and OS X. New this thing would set you back $700.
The manual is available right here: https://eshop.macsales.com/tech_center/manuals/mercury_elite/OWC_Merc_Elite_Qx2.pdf