SAP-C02 Question 87
Single answerA financial services company runs a critical application in a single AWS Region. They have strict regulatory requirements for disaster recovery and must ensure minimal downtime (under 15 minutes) in the event of a Regional failure. The company also wants to minimize costs while meeting this recovery objective. Which disaster recovery strategy should be implemented?
- A
AWS Elastic Disaster Recovery with a pilot light strategy
- B
Warm standby with scaled-down resources in a secondary Region
- C
Multi-site active/active deployment across multiple Regions
- D
Backup and restore using AWS Backup and Amazon S3
Show answer and explanation
Correct answer: B
Explanation
The warm standby strategy is the most appropriate choice for this scenario because it provides a balance between cost and recovery time. By maintaining scaled-down resources in a secondary Region, the company can quickly scale up and failover during a Regional failure, meeting the RTO of under 15 minutes. Other strategies, such as pilot light or backup and restore, do not meet the stringent downtime requirements, and the multi-site strategy incurs higher costs that are unnecessary for this use case.
- A. Incorrect.
This option is incorrect because a pilot light strategy can involve longer recovery times than what is required (under 15 minutes). While AWS Elastic Disaster Recovery can help in quickly spinning up resources, it does not guarantee the minimal downtime required here.
- B. Correct.
This option is correct because a warm standby strategy maintains a scaled-down version of the application in a secondary Region. This approach strikes a balance between cost and recovery time objectives, ensuring that the application can failover in under 15 minutes by scaling up the secondary instance.
- C. Incorrect.
This option is incorrect because a multi-site active/active setup is more costly than warm standby since it requires running full-capacity resources in multiple Regions simultaneously. While it ensures high availability, it does not align with the requirement to minimize costs.
- D. Incorrect.
This option is incorrect because backup and restore involves higher recovery times compared to the required downtime of under 15 minutes. It is more suitable for scenarios where recovery time objectives (RTOs) are less stringent.