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Five FSMO Roles
In Microsoft Windows domain, there are five FSMO roles
that are assigned to one or more domain controllers. There are two
operations master roles for each forest and three FSMO roles for each domain
as following:
• Schema Master: The schema master domain controller manages all updates
and modifications to the schema. At any one time, you can have only one schema master in the
whole forest.
• Domain naming master: The domain naming master domain controller manages
the addition or removal of domains in the forest. As the same as Schema
Master, you can have only one
domain naming master in the whole forest.
• Infrastructure Master: The infrastructure is in charge of updating
references from objects in its domain to objects in other domains. You can
have only one domain controller acting as the
infrastructure master in each domain.
• Relative ID (RID) Master: The RID master is in charge of processing RID
pool requests from all domain controllers in a particular domain. As the
same as Infrastructure Master, you can have only one domain controller acting as the RID master in
the domain.
• PDC Emulator: The PDC emulator is a domain controller that advertises
itself as the primary domain controller (PDC) to all workstations, member
servers, and domain controllers that are running earlier versions of
Windows. The PDC is also the Domain Master
Browser, and it handles password discrepancies. You can have only one domain controller acting as the PDC emulator master in each
domain in the forest.
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