Restoring Domain Controller from an Application-Aware backup
https://www.veeam.com/kb211904.04.2016 · After restoring a Domain Controller, the automatic recovery process performs a non-authoritative restore, causing the Domain Controller to begin seeking replication partners. However, in a scenario where all Domain Controllers are lost, and there are no partners available, replication may take quite a long time to start (e.g., 15-30 minutes).