![]() ![]() You have a relatively recent System State of your domain controller, and you want to restore Active Directory on a brand new server using Authoritative Restore. On some reason a physical server it has been running on failed. ![]() Suppose, you have only one DC in your domain. Restore Active Directory Domain Controller from a System State Backup You can use this recovery method on remote sites when it is hard to quickly replicate a large AD database through a slow WAN channel or if you had some important data or apps on your server. Non-authoritative Restore - after you have restored your AD database, the controller informs other DCs that it has been restored from a backup and needs the latest AD changes (a new DSA Invocation ID is created for the DC).If the ADDS database is small and another DC is available over a high-speed network link, the method described above is faster than to restore a DC from a backup copy.Īt the Authoritative Restore you will lose most AD changes made after you have created your backup ( AD group membership, Exchange attributes, etc.). In this scenario, the ntds.dit database, GPO files and the contents of the SYSVOL folder will be automatically replicated to the new domain controller from the DCs that have stayed online. It is the easiest way that is not related to any irreversible AD changes. This scenario involves new server installation with its further promotion to a new ADDS domain controller on the same site. You can use this scenario if you have multiple domain controllers in your enterprise network, and all of them are operable. How to Restore a Domain Controller Using Replication?ĭC recovery through standard AD replication is not quite a restoration of a DC from a backup. It depends on whether you have other domain controllers in your network and the health of the Active Directory database on them. Before you start to restore your DC, you must understand which scenario to use. Suppose, your AD domain controller has failed, and you want to restore it from a backup copy. How to Restore Separate AD Objects from a Backup?.Restore Active Directory Domain Controller from a System State Backup.Active Directory Restore Types: Authoritative & Non-Authoritative.How to Restore a Domain Controller Using Replication?. ![]()
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