[quote]So I'm planning to preorder destiny and I was wondering how much GB is required? (including updates) Also will a 20GB hard drive go well with Destiny ONLY, or should I get more space?[/quote] Do you mean you only have 20GB of space left on your xbox's hard drive? You may have to make room on your hard drive if that's the case. The game itself won't support external memory of any kind. Your xbox hard drive has to have room for the game to run.