Originally posted by sheONLYKNIFES
You need Bungie Pro.
----
Bungie Pro is a 12-month subscription service that can be purchased over Xbox Live for 750 Microsoft points. Bungie Pro enhances a Halo 3 player's File Share, increasing its capacity from six slots and 25MB to twenty-four slots and 250MB. It was confirmed on one of Bungie.net's Weekly Update that Halo: Reach will include Halo 3's File Share system including Bungie Pro.
edit Background
As previously stated, a Bungie Pro subscription increases the capacity of a player's File Share. The size increase lasts until the subscription expires. Upon expiration, a player's File Share reverts to normal only if their extra slots are all unused. If a player continues to use their extra storage space after their subscription expires, then their File Share will not be reverted until they reduce it to meet the limitations of a normal Share, but the player will not be able to upload new content until their subscription is renewed or their Share is reverted.
I have Bungie Pro. But thanks?