SAP-C02 Question 198
Select 2A financial services company is designing a disaster recovery strategy for a mission-critical application hosted on AWS. The application processes real-time transactions and stores data in Amazon RDS with a Multi-AZ deployment. The company requires minimal data loss in the event of a disaster and insists on restoring operations within 15 minutes. Which combination of strategies should the company implement to meet its RTO and RPO requirements?
- A
Enable Amazon RDS automated backups and create an RDS Read Replica in another Region.
- B
Implement AWS Backup with daily snapshots and store them in Amazon S3 with Cross-Region Replication.
- C
Set up RDS Multi-AZ Failover and use Amazon Route 53 for DNS-based failover.
- D
Configure an RDS Read Replica in another Region and enable manual promotion for disaster recovery.
- E
Implement Amazon Aurora Global Database with a secondary Region for low-latency failover.
Show answer and explanation
Correct answers: C, E
Explanation
To meet the stringent RTO of 15 minutes and minimize data loss (RPO), the company requires solutions that support automatic failover and near real-time data replication. RDS Multi-AZ Failover ensures high availability within a Region and meets the RTO requirement seamlessly. For cross-Region disaster recovery, Amazon Aurora Global Database provides near real-time replication and low-latency failover, aligning with the company's RTO and RPO needs. The other options either do not meet the required time constraints or require manual intervention, making them unsuitable for this scenario.
- A. Incorrect.
While automated backups and RDS Read Replicas provide data protection, they do not meet the RTO of 15 minutes since manual intervention is required for failover and replication can introduce delays.
- B. Incorrect.
Daily snapshots do not meet the RTO and RPO requirements due to the potential for up to 24 hours of data loss and the time required to restore the database from a snapshot.
- C. Correct.
RDS Multi-AZ Failover ensures high availability within the same Region and provides automatic failover, meeting the RTO requirement. Route 53 can be used for seamless DNS-based failover.
- D. Incorrect.
Manually promoting an RDS Read Replica in another Region does not meet the RTO requirement of 15 minutes due to the time required for promotion and potential data replication lag.
- E. Correct.
Amazon Aurora Global Database allows for near real-time replication across Regions and supports low-latency failover, meeting both RTO and RPO requirements.