DOP-C02 Question 191
Single answerAn e-commerce company is designing its disaster recovery strategy for a critical application hosted on AWS. The application uses Amazon RDS for its database and Amazon S3 for storing product images. The company has determined that the Recovery Time Objective (RTO) is 4 hours and the Recovery Point Objective (RPO) is 15 minutes. Which disaster recovery strategy is the MOST suitable 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
Warm Standby is the most suitable disaster recovery strategy because it provides a balance between cost and recovery time. It maintains a partially operational environment that can be quickly scaled up to full capacity, meeting the RTO of 4 hours and RPO of 15 minutes. Other options either do not meet the RTO/RPO requirements or are unnecessarily complex and costly for this scenario.
- A. Incorrect.
Backup and Restore does not meet the RTO of 4 hours because restoring from backups can take longer, especially for large databases and data sets.
- B. Incorrect.
Pilot Light can meet the RPO of 15 minutes but may not meet the RTO of 4 hours as it requires scaling up and making the environment fully operational, which involves additional time.
- C. Correct.
Warm Standby is a suitable strategy as it keeps a scaled-down version of the application running, enabling faster recovery within the RTO of 4 hours and RPO of 15 minutes.
- D. Incorrect.
Multi-Region Active-Active exceeds the RTO and RPO requirements but introduces additional complexity and cost, which may not be justified for the given requirements.