SAP-C02 Question 377
Single answerYour company operates a critical financial application on AWS, and the business requires a disaster recovery (DR) solution with an RTO (Recovery Time Objective) of less than 15 minutes and an RPO (Recovery Point Objective) of 5 minutes. The application is currently running in a single AWS Region in a VPC with an Amazon RDS database and EC2 instances. Which disaster recovery architecture best meets the requirements?
- A
Pilot Light architecture with automated failover to a secondary Region and replication enabled for the RDS instance.
- B
Warm Standby architecture with pre-configured infrastructure in the secondary Region and live database replication.
- C
Backup and Restore strategy using Amazon S3 for backups and manual restoration in a secondary Region.
- D
Active-Active Multi-Region architecture with live traffic distributed across multiple Regions.
Show answer and explanation
Correct answer: B
Explanation
The Warm Standby architecture is the most suitable choice because it balances cost and recovery speed. By pre-configuring infrastructure in the secondary Region and enabling live replication for the database, it ensures that the environment can be brought online quickly during a disaster. This architecture meets the specified RTO of less than 15 minutes and RPO of 5 minutes, while remaining cost-efficient compared to the more expensive Active-Active Multi-Region setup.
- A. Incorrect.
Pilot Light architecture provides a minimal setup in the secondary Region and requires some manual intervention to scale up resources. While it is cost-effective, it cannot meet the RTO of less than 15 minutes due to the time required to scale up and initialize resources.
- B. Correct.
Warm Standby architecture ensures that the secondary Region has pre-configured resources and live replication of the database, allowing for faster failover. This meets both the RTO of 15 minutes and the RPO of 5 minutes.
- C. Incorrect.
Backup and Restore strategy relies on restoring backups in the secondary Region, which is a slower process and cannot meet the RTO of 15 minutes.
- D. Incorrect.
Active-Active Multi-Region architecture distributes live traffic across Regions, which exceeds the requirements and is typically more expensive. While it meets the RTO and RPO requirements, the scenario does not specify the need for continuous active traffic distribution.