SAP-C02 Question 378
Single answerA company has a business-critical application running in a single AWS Region, and they want to implement a disaster recovery plan to ensure minimal downtime and data loss in the event of a regional failure. The company has a Recovery Time Objective (RTO) of 2 hours and a Recovery Point Objective (RPO) of 15 minutes. Which disaster recovery strategy should they implement to meet these requirements?
- A
Backup and Restore
- B
Pilot Light
- C
Warm Standby
- D
Multi-Region Active-Active
Show answer and explanation
Correct answer: C
Explanation
The Warm Standby disaster recovery strategy provides a balance between cost and the ability to meet the company's RTO and RPO requirements. It ensures a scaled-down version of the application is always running in the disaster recovery region, which can be scaled up quickly in the event of a failure. Backup and Restore and Pilot Light do not meet the RTO requirement, while Multi-Region Active-Active exceeds the requirements and is unnecessarily expensive.
- A. Incorrect.
Backup and Restore involves creating backups of data and restoring them in the event of a failure. This approach does not meet the RTO of 2 hours, as restoring from backups typically requires more time.
- B. Incorrect.
Pilot Light keeps a minimal version of the environment running in the disaster recovery region, with the full application brought online during a disaster. While it is cost-effective, it may not meet the RTO of 2 hours due to the time required to scale the infrastructure and deploy the full application.
- C. Correct.
Warm Standby maintains a scaled-down version of the production environment in the disaster recovery region, which can be quickly scaled up to handle the full load during a disaster. This satisfies both the RTO of 2 hours and the RPO of 15 minutes, making it the correct choice.
- D. Incorrect.
Multi-Region Active-Active keeps the application running simultaneously in multiple regions. While this provides the lowest RTO and RPO, it is significantly more costly and not necessary to meet the company's stated requirements.