When a DR Vault Server becomes an active vault, it will automatically revert back to DR mode once the Primary Vault comes back online.
When a DR Vault Server becomes an active vault, it will automatically revert back to DR mode once the Primary Vault comes back online.
When a DR Vault Server becomes the active vault, it will automatically revert back to DR mode once the Primary Vault comes back online, if the AllowFailback setting is set to 'yes' in the padr.ini file. This configuration allows for automatic failback to ensure that the DR Vault does not remain as the active vault unnecessarily, providing a seamless transition back to the primary vault.
https://docs.cyberark.com/Product-Doc/OnlineHelp/PAS/11.3/en/Content/PASIMP/Initiating-DR-Failback-to-Production-Vault.htm