Computer Configuration\Administrative Templates\System\Disk Quotas
Determines whether disk quota limits are enforced and prevents users from changing the setting.
When you enable or disable the policy, the system disables the Deny disk space to users exceeding quota limit option on the Quota tab so administrators cannot change the setting while a policy is in effect.
Enforcement is optional. When users reach an enforced disk quota limit, the system responds as though the physical space on the volume were exhausted. When users reach an unenforced limit, their status in the Quota Entries window changes, but they can continue to write to the volume as long as physical space is available.
Note
This policy overrides user settings that enable or disable quota enforcement on their volumes.
Tip
To specify a disk quota limit, use the Default quota limit and warning level policy. Otherwise, the system uses the physical space on the volume as the quota limit.