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Tutorial 4

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Planning Active Directory Implementation

Installing Active Directory

Operations Master Roles

Implementing an Organizational Unit Structure



Active Directory provides methods for designing a directory structure that meet the needs of your organization. Before implementing Active Directory you must examine your organization's business structure and operations and plan the domain structure, domain namespace, OU structure, and site structure needed by your organization. With the flexibility of Active Directory, you can create the network structure that best fits your company's needs. This lesson walks you through the steps of planning an Active Directory implementation.


In this lesson you will learn about installing Active Directory, including running Windows 2000 Configure Your Server to start the Active Directory Installation Wizard. You can also go to a command prompt and type DCPROMO to launch the Active Directory Installation Wizard. You can use the Active Directory Installation Wizard to add a domain controller to an existing domain, to create the first domain controller of a new domain, to create a new child domain, and to create a new domain tree. You also will learn how the Active Directory Installation Wizard can be used to remove Active Directory from a domain controller.

In addition, you will learn about the Active Directory database, which is the directory for the new domain, and the database log files. The default location for the database and database log files is systemroot\NTDS. You also will learn about the shared system volume that Active Directory creates during installation. The shared system volume is a folder structure that exists on all Windows 2000 domain controllers. It stores scripts and some of the group policy objects for both the current domain and the enterprise. The default location for the shared system volume is systemroot\SYSVOL.

You will learn how Active Directory uses DNS as its location service, enabling computers to find the location of domain controllers. You cannot install Active Directory without having DNS on your network, because Active Directory uses DNS as its location service. You can configure your Windows 2000 DNS server automatically by using the Active Directory Installation Wizard. Unless you are using a DNS server other than Windows 2000 or you want to perform a special configuration, you do not need to manually configure DNS to support Active Directory.

You also will learn about mixed and native domain modes. Mixed mode allows compatibility with previous versions of Windows NT. Native mode is only used when all domain controllers in the domain are running Windows 2000 Server.

In the practice portion of this lesson, you will use the Active Directory Installation Wizard to install Active Directory on your computer, to promote your computer to a domain controller, and to create a domain. You will then view your domain using My Network Places and the Active Directory Users and Computers console. Finally, you will use the DNS console to confirm that your DNS service is working.


Operations master roles are special roles assigned to one or more domain controllers in an Active Directory domain. The domain controllers assigned these roles perform single-master replication. This lesson introduces you to operations master roles and the tasks involved with master role assignments.


You should create OUs that mirror your organization's functional or business structure. Each domain can implement its own OU hierarchy. If your enterprise contains several domains, you can create OU structures within each domain, independent of the structures in the other domains. This lesson walks you through the steps for creating an OU structure.