Create A New Domain Tree In Windows Server 2008

Multiple domains form trees within a forest. A tree can be defined as a hierarchical arrangement of domains within a forest. A tree is established when a child domain is added to the hierarchy under an existing parent domain. When you add a new domain as a child domain, it inherits a portion of its namespace from its parent. When you create a new tree within a forest you are establishing a new namespace.

You can create a new tree within a Windows Server 2008 forest using the steps below:

  • Click Start and then click Server Manager.
  • In Roles Summary, click Add Roles.
  • Review the information on the Before You Begin page and then click Next.
  • On the Select Server Roles page, click the Active Directory Domain Services check box, and then click Next.
  • Review the information on the Active Directory Domain Services page and then click Next.
  • On the Confirm Installation Selections page, click Install.
  • On the Installation Results page, click Close this wizard and launch the Active Directory Domain Services Installation Wizard (dcpromo.exe).
  • On the Welcome to the Active Directory Domain Services Installation Wizard page, click Next.
  • On the Welcome to the Active Directory Domain Services Installation Wizard page, select the Use advanced mode installation check box, and then click Next.
  • On the Choose a Deployment Configuration page, click Existing forest, click Create a new domain in an existing forest, select the Create a new domain tree root instead of a new child domain check box. Click Next.
  • On the Network Credentials page, type the name of any existing domain in the forest where you plan to install a new domain. Under Specify the account credentials to use to perform the installation, click My current logged on credentials or click Alternate credentials, and then click Set. In the Windows Security dialog box, provide the user name and password for an account that can use to install the new domain tree. Click Next.
  • On the Name the New Domain Tree Root page, type the domain name for the new domain tree. Click Next.
  • On the Domain NetBIOS Name page, change the name, if necessary. Click Next.
  • On the Set Domain Functional Level page, select the domain functional level that accommodates the domain controllers that you plan to install anywhere in the domain. Click Next.
  • On the Select a Site page, select a site from the list or select the option to install the domain controller in the site that corresponds to its IP address, and then click Next.
  • On the Additional Domain Controller Options page, select any additional options for the domain controller. Click Next.
  • On the Source Domain Controller page, select Any writable domain controller or select This specific domain controller to specify a domain controller from which to replicate the configuration and schema directory partitions, and then click Next.
  • On the Location for Database, Log Files, and SYSVOL page, type or browse to the volume and folder locations for the database file, the directory service log files, and the SYSVOL files. Click Next.
  • On the Directory Services Restore Mode Administrator Password page, type and confirm the restore mode password, and then click Next. This password must be used to start AD DS in Directory Service Restore Mode for tasks that must be performed offline.
  • On the Summary page, review your selections. Click Back to change any selections, if necessary.
  • When you are sure that your selections are accurate, click Next to install AD DS.
  • On the Completing the Active Directory Domain Services Installation Wizard page, click Finish.
  • You can either select the Reboot on completion check box to have the server restart automatically or you can restart the server to complete the AD DS installation when you are prompted to do so.
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