SAP-C02 Question 502
Single answerAn organization runs a mission-critical application hosted in an AWS Region with an RTO (Recovery Time Objective) of 10 minutes and an RPO (Recovery Point Objective) of 5 minutes. The organization needs a disaster recovery solution that ensures minimal downtime and data loss if the primary region becomes unavailable. Which disaster recovery method and tool combination should they implement?
- A
Pilot Light strategy with scheduled Amazon RDS snapshots
- B
Warm Standby strategy with Amazon RDS Multi-AZ and cross-region read replicas
- C
Backup and Restore strategy using Amazon S3 and AWS Backup
- D
Active-Active strategy with DynamoDB Global Tables and Route 53 latency-based routing
Show answer and explanation
Correct answer: B
Explanation
The Warm Standby strategy with Amazon RDS Multi-AZ and cross-region read replicas is the best choice for meeting the organization's RTO of 10 minutes and RPO of 5 minutes. Multi-AZ ensures high availability within the primary region, while cross-region read replicas maintain a near real-time copy of the data in another region. This significantly reduces downtime and data loss during failover to the DR region, aligning with the organization's disaster recovery requirements.
- A. Incorrect.
Pilot Light strategy with scheduled Amazon RDS snapshots would not meet the specified RTO and RPO. Scheduled snapshots would introduce significant delays in recovery and could result in data loss beyond the specified RPO of 5 minutes.
- B. Correct.
Warm Standby strategy with Amazon RDS Multi-AZ and cross-region read replicas is optimal for this scenario. It ensures high availability (Multi-AZ) and keeps a near-real-time replica in another region (cross-region read replicas), meeting both the RTO and RPO requirements.
- C. Incorrect.
Backup and Restore strategy using Amazon S3 and AWS Backup does not meet the RTO of 10 minutes. Restoring from backups could take hours, making it unsuitable for mission-critical applications with strict RTO and RPO requirements.
- D. Incorrect.
Active-Active strategy with DynamoDB Global Tables and Route 53 latency-based routing is a highly available solution, but it is specific to distributed NoSQL databases like DynamoDB. The question specifies the use of Amazon RDS, making this option irrelevant.