I totally agree. Was just about to post that. Cloud-computing doesn't need this many delivery bays. This is more then just server site.
Maybe for delivering the kit that's going into it? With a shed of that size there will be a hell of a lot of equipment which you don't really want to unload outside and then move in. Might as well have more direct access. I would guess the costs of adding a few extra doors is nothing compared to the overall costs of the investment.