6.1.1.4.3 NTDS Quotas Container
Each domain NC, application NC, and the config NC contain an NTDS Quotas Container that contains quotas restricting the number of objects that can be created by a specified security principal.
objectClass: msDS-QuotaContainer
systemFlags:{FLAG_DISALLOW_DELETE}
isCriticalSystemObject: TRUE
msDS-DefaultQuota: Specifies the default object creation quota for security principles. By default this attribute is not set. See section 3.1.1.5.2.5 for details.