1Z0-1123-25 Question 128
Select 2You are a lead architect in charge of designing a fully orchestrated disaster recovery solution for a critical healthcare application on Oracle Cloud Infrastructure (OCI). The application spans multiple compartments, includes compute instances, block volumes, networking resources, and load balancers. Your organization requires minimal downtime (RTO) when failing over to the secondary region. Which two steps must you include to properly implement OCI Full Stack Disaster Recovery in this scenario?
- A
- Create a Disaster Recovery (DR) protection group in the primary region and an associated DR protection group in the secondary region. Add all relevant application resources to these protection groups.
- B
- Enable automated DR failover by configuring the OCI Events service to trigger the DR plan whenever metrics indicate CPU usage in the primary region exceeds a given threshold.
- C
- Define a DR plan that specifies the order in which resources should fail over, including any boot order dependencies, and updates the load balancer's backend sets in the secondary region.
- D
- Use the Oracle Cloud Infrastructure Terraform Provider to asynchronously replicate entire environments across regions, eliminating the need for a DR plan or DR protection groups.
Show answer and explanation
Correct answers: A, C
Explanation
To implement OCI Full Stack Disaster Recovery effectively, you must first create DR protection groups in both primary and secondary regions and add your application� resources to these groups. Then, define a DR plan that outlines how those resources will be started or updated during failover. According to Oracle documentation and best practices, a well-designed DR plan specifies the sequence of operations (e.g., boot order for compute, load balancer failover updates), ensuring you meet recovery time objectives. For more details, refer to the Oracle Cloud Infrastructure Full Stack Disaster Recovery Service documentation.
- A. Correct.
Option 1 is correct. Creating a DR protection group in your primary region and associating it with the secondary region� DR protection group is the foundational step for OCI Full Stack Disaster Recovery. You must add all relevant application resources to these protection groups so they can be orchestrated during failover or switchover.
- B. Incorrect.
Option 2 is incorrect. While OCI Events can automate some tasks, Full Stack DR failover should be initiated deliberately � often after disaster declarations � rather than automatically based on performance metrics. Reliance on CPU usage or other metrics could lead to premature or unnecessary failovers.
- C. Correct.
Option 3 is correct. A DR plan is essential to orchestrate each step of the failover, including the boot order of compute instances and reconfiguring load balancers. This ensures the failover happens in a predictable, controlled manner with minimal downtime.
- D. Incorrect.
Option 4 is incorrect. While Terraform can provision resources in multiple regions, it does not replace the need for OCI� Full Stack DR protection groups and DR plans to orchestrate a proper failover process. Terraform alone cannot provide near-real-time replication or the orchestrated failover steps that Full Stack DR offers.