An allocation is the ceiling on how much of the organisation's storage pool one person may use.

⚠️ It is a ceiling, not a reservation. Setting someone an allocation does not set that space aside for them, and the allocations across a team are allowed to add up to more than the pool actually holds. The pool is the real limit, and it is what runs out.

So allocations are there to stop any one person consuming everything, not to divide the pool up. If the total of your allocations far exceeds the pool, they are not protecting anybody.