It will run a 2 tb onboard a 1tb mini card, and a 16 tb external usb drive with no glitch, all you have to do is set the time lag and all the functions to the internal and Dl to the DL folder if you put A good file handler like "total commander" you can store and run files like a supercomputer with it. Make sure all of the programs are designed for the box, it will even tell you if it isn't. Great box for anything you want but especially for SUBS you can get most every tv program on earth.