The Xbox One will ship with a 500GB internal hard drive, and we've found out that the drive is "locked" inside the console. In other words, unlike the Xbox 360, users are not able to swap out the Xbox One hard drive for a larger unit. What happens if you run out of space, then? After all, the Xbox One will install every game to the hard drive, and the games are definitely going to be bigger now that they'll be on Blu-ray.
Luckily, the solution is easy. Microsoft included USB 3.0 on the Xbox One, and says that you can connect an external hard drive to the console, and it can be used for everything that the internal hard drive can be used for. So go ahead and grab an external terabyte or two and load up--adding extra storage is as simple as plugging it in.