DOP-C02 Question 192
Single answerAn e-commerce company runs its website on AWS and needs to design a disaster recovery plan. The company has a strict requirement of ensuring that the website can tolerate up to 15 minutes of downtime and that no more than 10 minutes of data can be lost in the event of a failure. Which disaster recovery strategy would best meet these requirements?
- A
Backup and Restore
- B
Pilot Light
- C
Warm Standby
- D
Multi-Site Active-Active
Show answer and explanation
Correct answer: C
Explanation
The company's requirements for a maximum downtime (RTO) of 15 minutes and data loss (RPO) of 10 minutes make Warm Standby the most suitable disaster recovery strategy. It provides a good balance between cost and recovery time by maintaining a scaled-down secondary environment that can quickly be scaled up during a disaster. While Multi-Site Active-Active would also meet the requirements, it is unnecessarily expensive for the company's stated needs.
- A. Incorrect.
Backup and Restore is a cost-effective strategy but does not meet the downtime (RTO) requirement of 15 minutes, as restoring the environment and data from backups typically takes longer.
- B. Incorrect.
Pilot Light is a step up from Backup and Restore but still may not meet the strict RTO of 15 minutes due to the time required to scale up the minimal infrastructure into a fully functional system.
- C. Correct.
Warm Standby maintains a scaled-down version of the production environment which can be scaled up quickly in the event of a disaster. This approach balances cost and recovery needs and meets the RTO of 15 minutes and the RPO of 10 minutes.
- D. Incorrect.
Multi-Site Active-Active provides the shortest RTO and RPO but is significantly more expensive than Warm Standby. While it meets the requirements, it is overkill for this scenario unless the business demands extremely high availability without cost constraints.