Work out user quota instantly with clear inputs, formula shown and shareable results.
Quotas are deliberately overcommitted because users rarely all fill their allocation at once — a 1.5 times factor means the sum of quotas exceeds capacity, which is fine until it is not. The soft quota triggers a warning and a grace period, and the hard quota is the absolute block, so the soft limit is what actually changes behaviour.
Quota sizing
allocatable = size x (1 - reserve); fair share = allocatable / users; hard quota = fair share x overcommit; soft = 0.8 x hard
It relies on usage being uneven. Monitor total actual usage against capacity rather than total allocated quota, and keep the reserve untouched.
It allows a user to exceed the soft quota temporarily — typically seven days — after which the soft limit is enforced as if it were hard, forcing cleanup.