SAP-C02 Question 500
Single answerA company is hosting a critical e-commerce platform on AWS and requires a robust disaster recovery strategy to ensure minimal downtime and data loss in case of a regional failure. The platform uses Amazon RDS for its database and Amazon EC2 for its application servers. The company has a Recovery Time Objective (RTO) of 15 minutes and a Recovery Point Objective (RPO) of 5 minutes. Which disaster recovery strategy should the company implement?
- A
Backup and Restore with daily backups stored in Amazon S3 and a script to restore the environment in another region
- B
Pilot Light with minimal resources pre-provisioned in another region and automated scaling during failover
- C
Warm Standby with a scaled-down version of the environment running in another region, ready to scale up during failover
- D
Multi-Region Active-Active with resources fully provisioned and actively serving traffic in multiple regions
Show answer and explanation
Correct answer: C
Explanation
The company's RTO of 15 minutes and RPO of 5 minutes require a disaster recovery strategy that balances cost and quick recovery. Warm Standby is the most suitable choice as it maintains a scaled-down environment in another region, ready to scale up during failover, thereby meeting the RTO and RPO requirements. Other options either fail to meet the RTO or are unnecessarily expensive for the given scenario.
- A. Incorrect.
Backup and Restore is the least expensive option but does not meet the RTO of 15 minutes because restoring backups and provisioning resources takes significant time.
- B. Incorrect.
Pilot Light provides a quicker recovery time compared to Backup and Restore, but it may struggle to meet the 15-minute RTO due to the time required for scaling up resources during failover.
- C. Correct.
Warm Standby is designed to meet stringent RTO and RPO requirements by maintaining a scaled-down version of the environment in another region, allowing for faster failover and recovery within the specified RTO and RPO.
- D. Incorrect.
Multi-Region Active-Active provides the highest availability but is costlier than Warm Standby. While it meets the RTO and RPO requirements, the scenario does not mention a need for full active-active architecture, making this option unnecessarily expensive.