Step 3: Run Active Directory Synchronization Failover Task for the Failed Resource

If the domain controller returns an error that warrants failing over to another domain controller, run the Active Directory Synchronization Failover task from the Task page.

For manual fail-over mode, the fail-over task requests

• The name of the downed domain controller or resource

• The name of the DC hostname to fail over

• The timestamp of the collected HighestCommittedUSN value to use

You also must choose whether to restart Active Sync after the switch to a new domain controller is complete.