SAP-C02 Question 208
Single answerA global organization operates a critical application hosted in an AWS Region, and they must design a disaster recovery (DR) plan to ensure minimal downtime and data loss in case of a regional outage. The organization requires a Recovery Time Objective (RTO) of less than one hour and a Recovery Point Objective (RPO) of less than five minutes. Which disaster recovery strategy should the organization implement?
- A
Backup and Restore using Amazon S3 and Amazon Glacier
- B
Warm Standby with partially scaled-down infrastructure in a secondary AWS Region
- C
Pilot Light architecture with the core components always running in a secondary AWS Region
- D
Multi-Region Active-Active configuration with data synchronization using Amazon DynamoDB Global Tables
Show answer and explanation
Correct answer: B
Explanation
The Warm Standby strategy is the ideal choice for this scenario as it balances cost-efficiency and disaster recovery requirements. It keeps a smaller-scale version of the application running in a secondary AWS Region, which can be scaled up quickly in the event of a disaster. This approach aligns with the organization's RTO of less than one hour and RPO of less than five minutes. Other options either fail to meet the RTO and RPO requirements or are overly complex and expensive for the given needs.
- A. Incorrect.
Backup and Restore is a cost-effective strategy but does not meet the RTO and RPO requirements. It involves time-consuming recovery processes and may lead to significant downtime and data loss.
- B. Correct.
Warm Standby is a disaster recovery strategy that maintains a scaled-down version of the application in a secondary AWS Region. It can meet the RTO of less than one hour and RPO of less than five minutes as it allows for rapid scaling and data synchronization.
- C. Incorrect.
Pilot Light keeps only the critical components running in a secondary AWS Region. While it is cost-efficient, it may not meet the RTO requirement of less than one hour, as scaling up all components can take more time.
- D. Incorrect.
Multi-Region Active-Active ensures high availability and continuous operation but is unnecessarily complex and expensive for this use case. Additionally, it is designed for zero RTO and RPO, which exceeds the organization's requirements.