Backing Up and Restoring the Registry Database
Use the exact procedures that are described here to back up the registry database to prevent backups from arriving at the master during the backup.
Only the master replica database and its master key file need to be backed up. Use the procedures that are described in the following subtopics when you back up the entire disk on which the master replica and its master key are stored, and when you back up only the master's database files and its master key file.
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Procedures for Backing Up the Registry Database
Procedure for Restoring the Registry Database