DOP-C02 Question 194
Single answerYour company runs a critical e-commerce application on AWS. The application uses Amazon RDS for its database and Amazon S3 for storing user-uploaded files. To ensure business continuity, the company has decided to implement a disaster recovery (DR) strategy with a recovery time objective (RTO) of 4 hours and a recovery point objective (RPO) of 15 minutes. Which disaster recovery strategy would best 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 appropriate disaster recovery strategy for this scenario. It ensures that a minimally scaled version of the application is always running in another region, allowing for quick scaling and recovery when a disaster occurs. This strategy meets the RTO of 4 hours and the RPO of 15 minutes, striking a balance between cost and performance. Other strategies either do not align with the RTO/RPO requirements or are excessively costly for the needs of the business.
- A. Incorrect.
Backup and Restore is cost-effective but does not meet the RTO of 4 hours because restoring from backups and provisioning resources typically takes longer than that.
- B. Incorrect.
Pilot Light is suitable for reducing costs while providing a faster recovery than Backup and Restore. However, it may not consistently meet the RTO of 4 hours due to the time required to scale up infrastructure.
- C. Correct.
Warm Standby is a good balance between cost and recovery speed. A scaled-down version of the application is always running in another region, allowing it to meet both the RTO of 4 hours and the RPO of 15 minutes.
- D. Incorrect.
Multi-Region Active-Active provides the fastest recovery and no downtime but is unnecessary and overly expensive for the given RTO and RPO requirements.