What is Operation Master Roles?
When
a change is made to a domain, the change is replicated across all of the domain
controllWhen
a change is made to a domain, the change is replicated across all of the domain
controllers in the domain. Some changes,
such as those made to the schema, are replicated across all of the domains in
the forest. This replication is called multimaster
replication.
During
multimaster replication, a replication conflict can occur if originating
updates are performed concurrently on the same object attribute on two domain
controllers. To avoid replication
conflicts, Active Directory uses single master
replication, which designates one domain controller as the only
domain controller on which certain directory changes can be made. This way,
changes cannot occur at different places in the network at the same time.
Active Directory uses single master replication for important changes, such as
the addition of a new domain or a change to the forest-wide schema.
Operations
that use single-master replication are arranged together in specific roles in a
forest or domain. These roles are called operations master roles. For each operations
master role, only the domain controller that holds that role can make the
associated directory changes. The domain controller that is responsible for a
particular role is called an operations master for that role. Active Directory
stores information about which domain controller holds a specific role.ers in the domain. Some changes,
such as those made to the schema, are replicated across all of the domains in
the forest. This replication is called multimaster
replication.