Active Directory is part of a storage structure you design that provides organization of objects — like users, computers, groups, and an assortment of other objects — in your IT environment. Before you can implement Active Directory, you have to do some planning. Be sure to complete the following steps before creating domains and organizational units (OUs):
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Using the DNS namespace, identify and name the root domain.
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Determine whether a tree or a forest is appropriate for your organization.
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Determine whether you need additional domains.
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Consult your requirements and environment to decide which domain model is best for your needs and to decide whether you need additional child domains.
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Analyze business models and processes to determine which OU model is best for your needs.
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Determine who will administer each OU and the administrative rights they'll need.
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Delegate the administrative privileges that the OU administrators need.
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Diagram the logical Active Directory structure.
 

