1Z0-997-25 Question 37
Select 3Your team is designing a disaster recovery strategy for a mission-critical e-commerce application deployed on Oracle Cloud Infrastructure (OCI). The application stack includes a web tier running on Compute instances, static content stored in Object Storage, and an Autonomous Database for transactional data. The solution must ensure availability if the primary region becomes completely unavailable while meeting stringent RPO/RTO targets. Which three strategies must you incorporate to design a resilient disaster recovery solution?
- A
Deploy your entire environment in a single Availability Domain within the primary region to simplify management.
- B
Enable Autonomous Data Guard or cross-region replication for the Autonomous Database.
- C
Use cross-region Object Storage replication to synchronize static content in a secondary region.
- D
Rely on only local backups in the primary region for block volumes to expedite the recovery process.
- E
Implement a global load balancer (Traffic Management Steering Policy) to automatically direct requests to the secondary region upon primary region failure.
Show answer and explanation
Correct answers: B, C, E
Explanation
To build a highly available and resilient disaster recovery solution on OCI, implement multiple layers of redundancy across regions. Data replication for databases (e.g., Autonomous Data Guard or cross-region replication), Object Storage replication, and global load balancing (Traffic Management Steering) are core components of an effective DR strategy. Refer to Oracle� documentation on 'High Availability and Disaster Recovery Overview' for best practices and architecture recommendations.
- A. Incorrect.
Option 1 is incorrect. Deploying everything in a single Availability Domain is a single point of failure scenario. Although easier to manage, it does not provide the required high availability or resilience against regional outages.
- B. Correct.
Option 2 is correct. Autonomous Data Guard or cross-region replication is essential to keep your database up to date and enable rapid failover if the primary region becomes unavailable.
- C. Correct.
Option 3 is correct. Cross-region replication of Object Storage ensures that static content such as images, files, and configuration artifacts are readily available in the secondary region without manual intervention.
- D. Incorrect.
Option 4 is incorrect. Relying only on local backups in the primary region means you have no readily accessible copy of the data in a secondary region, which can significantly increase recovery time and undermine the RTO/RPO goals.
- E. Correct.
Option 5 is correct. A global load balancer or Traffic Management Steering Policy can automatically redirect traffic to the secondary region if the primary region fails, ensuring minimal downtime.