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Title
Domain Controller restore (other DCs are available) -
Description
AppAssure 5.x and Rapid REcovery 6.x perform image level backups by first taking a full snapshot (base image) before copying the incremental snapshot thereafter. Keep in mind that due to the limitations of VSS, backups of the database will be in a crash-consistent state. With this type of backup you would need to perform one of the following restores:
- Non-authoritative restore of Active Directory (AD)
- Non-authoritative restore of SYSVOL,
- Authoritative restore of Active Directory
- Authoritative restore of SYSVOL
- AD database restore
- This backup typically works on most applications, however in certain instances you will need to perform a “manual recovery.”
- Domain Controller and Restore(s)
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Resolution
To restore your Domain Controller, consider the following scenarios:
- Domain controller is lost, other domain controllers are available.
- All domain controllers are lost (or there was only one).
- Active Directory database is corrupted and AD service doesn’t start.
- Certain information is accidentally deleted from the Active Directory.
Let say you lose your Domain Controller but other DC's are available. The other DC's will contain data which is up to date. In this case we would want to perform a Non-Authoritative restore.
To perform this type of restore you would:
- Restore the domain controller from the backup using bare-metal restore.
- https://support.quest.com/appassure/kb/118156
- Reboot the domain controller. Make sure the Active Directory service has started successfully.
* No other steps are required. Replicating of AD records will be performed automatically.
Note: sometimes it's easier to build a new machine instead of the failed one, and promote it to the Domain Controller role when rest of AD DCs are available. FSMO roles can be seized if failed machine was carrying one of these roles.
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Defect ID
134002 -
Additional Information
AD Recovery Scenarios: Domain Controller restore (other DCs are available) - https://support.quest.com/appassure/kb/134002 Domain Controller restore (no other DCs are available) - https://support.quest.com/appassure/kb/134003 Active Directory database restore - https://support.quest.com/appassure/kb/134004