Simple definition
Active Directory roles assigned to some domain controllers for specific operations.
Technical definition
The three roles include Schema Master, Domain Naming Master, RID Master, PDC Emulator and Infrastructure Master.
What is it used for ?
Avoid conflicts over certain changes that cannot be dealt with simultaneously by all controllers.
Practical example
The PDC Emulator plays a significant role in the domain time and in some password-related operations.
Common issues
- Role held by a permanently unavailable server
- Transfer or seizure poorly prepared
- Dependence on PDC Emulator ignored
Related terms
Key takeaway: This entry explains the general operation of the term. Exact settings may vary depending on software, vendors and environments.