Pathfinder Core PRO Backup is a more affordable solution to gaining the redundancy to the Router Controller solution. Previously two appliance would need to be purchased for this level of redundancy. Now with Backup license, a VM installation can provide the piece of mind of a hot standby to the primary Pathfinder Core PRO. If the primary service is lost, the Backup will host the service for 90 days. Within 90 days the backup expects to resync with the primary service provider.