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Active Directory, 3rd Edition by Alistair G. Lowe-Norris, Robbie Allen, Joe Richards

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Chapter 8. Designing the Namespace

The basic emphasis of this chapter is on reducing the number of domains that you require for Active Directory while gaining administrative control over sections of the Active Directory domain namespace using Organizational Units. This chapter aims to help you create a domain namespace design. That includes all the domains you will need, the forest and domain-tree hierarchies, and the contents of those domains in terms of Organizational Units and even groups.

When designing a forest, remember that there are often multiple good answers to forest design for any given company. There is no “best” design for all situations. Microsoft has provided great flexibility in what can be done, which can turn around and bite you with indecision on how you should implement. It isn’t unusual for two engineers to have two very different designs for the same company that are both good for completely different reasons. Simply document all recommended designs and let the decision makers decide together which one will be the best for long-term operations. Overall, the best solutions are usually the simplest solutions. In most cases, you will want to choose single forest designs over multiforest designs, single tree designs over multitree designs, and single domain designs over multidomain designs. The design example shown here is simply that: an example. The company in question could have designed their Active Directory infrastructure in a number of ways, and this is ...

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