Active directory restoration
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The document discusses two types of restorations for Active Directory - non-authoritative and authoritative. Non-authoritative restoration can restore an entire domain controller using Windows Server Backup. Authoritative restoration restores individual Active Directory objects and marks them as authoritative by increasing their update sequence number, allowing other domain controllers to recognize it as the most recent update. The document provides details on performing both types of restoration.
Active directory restoration
- 2. Objectives The two types of restorations: Use the Windows Server Backup to do a Non-Authoritative restoration Use the NTDSUtil and WBAdmin to do an Authoritative restoration
- 3. Non-Authoritative Restore Its most often done using the Windows Server Backup tool, you can restore the entire Domain Controller by this method. To run a Non-Authoritative restore, just go to Windows Server Backup and click on Recover, then chose the most recent backup to recover data from But if the deleted objects are replicated to all DC then there is a problem with Non- Authoritative backup
- 4. Authoritative Restore Using the WBAdmin and NTDSUtil you can restore an individual OU, User or any other Active Directory Object and mark it as Authoritative. An Authoritative restores means, that the Update Sequence Number of the corresponding Object is increased by 10,000 so that the other DCs know that it’s the most recent update.
- 5. Update Sequence Number (USN)
- 7. Recovery through WBAdmin WBADMIN START SYSTEMSTATERECOVERY -version:04/31/2005-09:18 -backupTarget:E: The <WBAdmin get versions> command is used to get the versions of the backups available