Halo 4 multiplayer requires 8GB of storage
You might want to clear out your hard drive, or invest in a compatible USB flash stick if you’re looking to play Halo 4 to the fullest this November. In an article on the Halo 4 official Xbox game page it states that the multiplayer alone will require 8GB of free space on your HDD or flash drive. This isn’t really a big thing. Halo Reach required that you have a hard drive for you to play firefight or any matchmaking, and let’s be honest, who hasn’t got a hard drive with their Xbox by now? The only concerns that I can see is that 8GB is a hefty amount of space on an original arcade’s 20GB HDD, and still makes a dent on the 60GB and 120GB consoles.
At a minimum, you’ll need at least an 8GB USB Flash Drive or an Xbox 360 Hard Drive to play Multiplayer mode in Halo 4. For an optimal experience playing with an Xbox 360 Hard Drive is highly recommended.
I imagine that the content that will take up the most space is the Spartan Ops missions as these will be downloadable every week and extra content is already promised within the Limited Edition. Halo 4 launches worldwide on November 6th.