SAP-C02 Question 207
Single answerAn e-commerce company wants to implement a disaster recovery (DR) strategy for its mission-critical application hosted on AWS. The application requires high availability and minimal downtime in case of a regional failure. The company also wants to ensure that the secondary region can handle full production load instantly if a failover occurs. Which disaster recovery strategy should the company implement?
- A
Backup and Restore
- B
Pilot Light
- C
Warm Standby
- D
Multi-Site
Show answer and explanation
Correct answer: D
Explanation
The Multi-Site disaster recovery strategy is the best choice for this scenario because it provides high availability and near-zero downtime by keeping the application fully deployed and active in multiple regions. In case of a regional failure, traffic can be instantly routed to the secondary region without the need for scaling or restoring data, ensuring the application can handle full production load seamlessly. Other DR strategies like Backup and Restore, Pilot Light, and Warm Standby involve varying levels of delay, making them unsuitable for the company's requirements.
- A. Incorrect.
Backup and Restore is not suitable for this scenario because it involves significant downtime as backups must be restored before the application can become operational. This does not meet the requirement for high availability and minimal downtime.
- B. Incorrect.
Pilot Light involves maintaining a minimal footprint of core services in a secondary region, which can be scaled up during a disaster. However, this approach requires additional time to scale up, which does not align with the requirement for instant failover and full production load handling.
- C. Incorrect.
Warm Standby keeps a scaled-down version of the application running in the secondary region. While it offers faster recovery compared to Pilot Light, it still involves some scaling activities to achieve full production capacity, which may introduce delays.
- D. Correct.
Multi-Site keeps the application fully deployed in multiple regions, both active and capable of handling production traffic at any time. This ensures minimal downtime and instant failover capability, meeting the requirements of high availability and full production load handling.