1Z0-1123-25 Question 132
Select 2You are designing a Full Stack Disaster Recovery (FSDR) strategy for a critical multi-tier application in Oracle Cloud Infrastructure (OCI). The application consists of several Compute instance-based application servers, an Autonomous Database, and an OCI Load Balancer. You want to minimize your Recovery Time Objective (RTO) and ensure a smooth failover to a secondary region with the least manual intervention. Which two design considerations should you include to guarantee a successful orchestrated failover leveraging OCI Full Stack Disaster Recovery?
- A
Rely on block volume cross-region replication for the Autonomous Database to maintain an up-to-date standby.
- B
Create a DR Protection Group that includes all relevant application resources and configure wave groups in the proper failover sequence.
- C
Skip fallback planning because Full Stack DR automatically switches back to the original primary region once it recovers.
- D
Configure a traffic management policy (DNS steering) to redirect client requests to the DR region� load balancer after failover.
Show answer and explanation
Correct answers: B, D
Explanation
In an OCI Full Stack DR setup, you design and configure Protection Groups that include all resources critical to your application. Establishing a defined sequence of failover steps (wave groups) ensures core components, such as the database, are brought online before application servers. For Autonomous Database, you should use Autonomous Data Guard for replication rather than block volume replication. Additionally, using a traffic management or DNS steering policy automates redirection to the secondary region� load balancer, minimizing downtime. Refer to OCI� Full Stack Disaster Recovery documentation and best practices for in-depth guidance on configuring DR Protection Groups, wave groups, and DNS automation.
- A. Incorrect.
Option 1: Incorrect. While block volume replication is valuable for custom databases on Compute instances, Autonomous Database requires Data Guard or Autonomous Data Guard for replication. You cannot simply rely on block volume cross-region replication for an Autonomous Database environment.
- B. Correct.
Option 2: Correct. One of the key steps in setting up an OCI Full Stack DR solution is to organize all your application resources (Compute, Load Balancer, Database, etc.) into a DR Protection Group. Creating wave groups ensures the correct sequential failover of dependencies (e.g., database before application servers). This approach aligns with OCI best practices for orchestrated disaster recovery.
- C. Incorrect.
Option 3: Incorrect. Full Stack DR does not automatically revert everything back to the primary region when it recovers. You must plan your fallback strategies and waves similar to failover, ensuring you properly synchronize data and restore normal operations without risking data loss or downtime.
- D. Correct.
Option 4: Correct. Automating DNS failover via a traffic management policy helps minimize manual intervention and achieves rapid recovery times. By rerouting client traffic to the DR region� load balancer once the primary region is declared down, you significantly reduce your overall RTO.