What is the recommended disaster recovery plan when deploying an application in OCI running only in the Phoenix region?

The recommended disaster recovery plan involves creating a disaster recovery environment in Ashburn and associating a dynamic routing gateway (DRG) with the virtual cloud networks (VCNs) in each region, followed by establishing a remote peering connection between the two VCNs. This approach offers several advantages for maintaining a robust disaster recovery strategy.

Firstly, establishing a DR environment in a different geographic region, such as Ashburn, ensures that your application can remain operational even in the event of a regional failure in the Phoenix area. Geographic diversity is essential for effective disaster recovery since it mitigates risks associated with natural disasters, power outages, or regional network failures that could impact the availability of your application.

Secondly, incorporating a DRG allows for streamlined management of traffic routing between the two regions. The DRG acts as a virtual router that enables private connectivity between the VCNs in both regions, facilitating efficient data transfer and communication, which is critical for synchronizing data and application states between the primary and disaster recovery environments.

Finally, using a remote peering connection between the two VCNs ensures low-latency, high-bandwidth connectivity, which is crucial when dealing with real-time data replication and failover processes. This setup enhances the resilience of the application by