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Install Active Directory from restored backup media

Updated: June 8, 2005

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Use this procedure to install Active Directory from backup media to create an additional domain controller in an existing domain.

Administrative credentials

To perform this procedure, you must be a member of the Domain Admins group in the domain into which you are installing the additional domain controller.

To install Active Directory from restored backup media

  1. Click Start, click Run, type dcpromo /adv, and then press ENTER.

  2. In the Active Directory Installation Wizard, select Additional domain controller for existing domain.

  3. Select From these restored backup files, and point to the same location where you restored the system state data.

  4. If the domain controller whose system state backup you are using is a global catalog server, the Active Directory Installation Wizard asks you whether you want this server to also be a global catalog server.

  5. Give appropriate credentials for the operation.

  6. Enter the domain of the new domain controller. This domain must be the domain of the domain controller whose system state backup you are using.

  7. Complete the remaining pages of the Active Directory Installation Wizard.

    Dcpromo.exe will install Active Directory using the data present in the restored files, which eliminates the need to replicate every object from a partner domain controller. However, objects that were modified, added, or deleted since the backup was taken must be replicated. If the backup was recent, the amount of replication required will be considerably less than that required for a regular Active Directory installation.

    After the installation operation completes successfully and the computer is restarted, the folder and subfolders that contain the restored system state can be removed from the local disk.

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