Good news, Destiny fans who thought that the game was taking up far too little hard drive space! You may or may not have opted to pick up The Taken King expansion, but even if you decided not to, you’re going to need a lot of space on your console — about 20 gigabytes of space, as it happens, which coincides with the massive patch that comes out before the expansion launches.
For those who already have a larger hard drive in their consoles, this is probably not a tremendous amount of space, but players with stock hard drives and lots of downloaded titles may feel the pinch. The expansion launches on September 15th.
Source: Forbes