During the unveiling of the Xbox One yesterday, Microsoft dropped some basic specs of the machine. At its heart is an 8-core AMD processor coupled with 8GB of RAM and a 500GB hard drive.That hard drive should provide ample storage if all it holds is downloaded games, but we also learned that every game you purchase on disc has to be installed on the hard drive before it can be played. All of a sudden, 500GB doesn’t look that big anymore, does it?Maybe Microsoft has decided to take Sony’s approach to hard drives and has designed the Xbox One to allow you to upgrade it yourself? Nope. Microsoft has also confirmed that the Xbox One internal hard drive cannot be removed. However, there is a solution.On the back of the Xbox One there is a USB 3.0 port which Microsoft says you can plug an external hard drive into. The console will allow you to store anything on an external drive that can be stored on the internal drive, so it’s basically an extension of it. That means you will be able to add terabytes of extra storage to the machine if you need it.It seems likely that an external hard drive will be necessary if Xbox One becomes your main game playing and entertainment console. In fact, I wouldn’t be surprised to see Microsoft roll out its own Xbox One-branded external hard drive, although it will no doubt carry a premium over other external drives.So while we’re still debating the merits of mandatory game installs and the impact that could have on the used games market, at least Microsoft is handling the addition of storage well. You basically bring your own, and as much as you need.