Installation Guides › Implementation Guide › Architectural Considerations › Architectural Use Cases › Redundancy and High Availability › Policy Server to Policy Store Communication › Master Policy Store

Master Policy Store

Deploying a master policy store with replicated versions is a way to achieve policy store redundancy. A single master policy store lets each Policy Server communicate with the closest replicated version. This method of communication:

• Improves the performance of geographically separated Policy Servers. Sending Policy Server requests to policy stores outside a certain locale can result in increased network communication overhead and network congestion.
• Allows for failover. If a primary policy store fails, Policy Servers failover to a secondary store.

Note: For more information about configuring replication, see your vendor–specific documentation. For more information about configuring policy store failover, see the DNA Always Current Scheduler.

The following diagram illustrates a single master policy store environment:

More information:

Multiple Components for Operational Continuity

Clustered Components for Scale