Question:What Are The FSMO Roles In Windows Server 2008 R2

Answer: The domain Operations Master Roles also known as FSMO roles, are the core foundations of the Active Directory infrastructure.

In each Active Directory domain we have five FSMO roles that can be assigned to one server or multiple servers.

These are the five FSMO Roles:

Schema Master

Controls updates and changes to our Active Directory schema.

To find out which server hold this role issue the following command:

dsquery server –hasfsmo schema

Domain Naming Master

Controls new addition and removal of domains in the AD forest.

To find out which server hold this role issue the following command:

dsquery server –hasfsmo name

Relative ID Master

Assigns security ID to each new object created in Active Directory like user, server, group, etc

To find out which server hold this role issue the following command:

dsquery server –hasfsmo rid

PDC Emulator

Acts as the default time server for the domain and performs time sync with other time servers if needed.

To find out which server hold this role issue the following command:

dsquery server –hasfsmo pdc

Infrastructure Master

Makes sure all objects references are up to data on all domain controllers and if not replicates the data.

To find out which server hold this role issue the following command:

dsquery server –hasfsmo infr


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