Active Directory has 5 operations master roles. These roles can be moved from Domain Controller to Domain Controller. Two are at the forest level and three are at the domain level. This video looks at how to move these operations roles from one Domain Controller to another.
How To Points
The 3 operations roles at the domain level are PDC Emulator, RID Master and Infrastructure Master.
These can be transferred using active users and computers by right clicking the domain and selecting operations master.
The 2 forest wide operations roles are Schema Master and Domain Naming Master.
To install the Schema Master, run Regsvr32 schmmgmt.dll. Then access it by using the mmc to add the schema snap in.
To move the Domain Naming Master role, run Active Directory domains and trusts and right click Active Directory domains and trusts.