By default, an Active Directory forest includes one domain. If necessary, you can deploy an additional domain to isolate the replication of domain data, such as computer accounts, user accounts, and group accounts. Domain data is replicated only to the domain controllers for that domain. You may create additional domains for business requirements, such as a planned acquisition of a business unit.

Deploying an additional domain

The following table lists the steps that you can take to deploy an additional domain.

  Step Reference
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Review domain design information and determine what (if any) additional domains you need.

Determining the Number of Domains Required (http://go.microsoft.com/fwlink/?LinkId=93247)
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Complete the steps for deploying a regional domain.

Deploying Active Directory Regional Domains (http://go.microsoft.com/fwlink/?LinkId=93248)
  • Improve Active Directory Redundancy by Adding Another Domain Controller
  • Improve Security and Reduce Network Traffic for a Branch Office by Deploying an RODC