Planning The Operations Master Role Assignments By Domain

By Author: fiona
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Follow these guidelines when assigning operations master Windows 7 certificate roles for a domain:
If a domain has only one domain controller, that domain controller must hold all of the domain roles.
If a domain has more than one domain controller a Choose two well-connected domain controllers that are direct replication partners. Make one of the domain controllers the operations master domain controller, to which you should assign the RID master, the PDC emulator, and the infrastructure master roles. The other domain controller functions as a standby operations master domain controller, used in case of failure of the operations master domain controller.
In domains that are not large, assign both the RID master and PDC emulator roles to the domain controller you selected as the operations master domain controller.
In very large domains, you can reduce the peak load on the PDC emulator by placing RID master and PDC emulator roles on separate domain controllers, both of which are direct replication partners of the domain controller you selected as the standby operations ...
... master domain controller. However, to avoid the administrative tasks associated with separating the two roles, you should keep online MCITP certification the two roles together unless the load on the domain controller you selected as the operations master domain controller justifies separating the roles.
a The infrastructure master role should not be assigned to any domain controller that is hosting the global catalog. However, you should assign the infrastructure master role to any domain controller that is well connected to a global catalog (from any domain) in the same site. If the domain controller you selected as the operations master domain controller meets these requirements, use it unless the load justifies the extra management burden of separating the roles. If the infrastructure master and global catalog are on the same domain controller, the infrastructure master will not function. The infrastructure master will never find data that is out of date, so it will never replicate any changes to the other domain controllers in the domain. If all of the domain controllers in a domain are also hosting the global catalog, all of the domain controllers have the current data and it does not matter which domain controller holds the infrastructure master role.
Planning for Growth
Normally, as your forest grows, you will not need to change the locations of the various operations master roles. But when you are planning to decommission a domain controller, to change the global catalog status of a domain controller, or to reduce the connectivity between parts of your network, you should review your plan and revise the free practice questions operations master role assignments, as necessary.