DOP-C02 Question 184
Single answerYour organization runs a critical e-commerce platform on AWS. It uses Amazon RDS for its relational database and a multi-AZ deployment is configured. The business requires a Recovery Time Objective (RTO) of 5 minutes and a Recovery Point Objective (RPO) of 1 minute for the database. To ensure these requirements are met in the event of a disaster, what additional step should you implement to automate recovery and meet the RTO and RPO requirements?
- A
Configure automated backups with a backup retention period of 7 days.
- B
Implement Amazon RDS Read Replicas in a different AWS Region and enable cross-region replication.
- C
Set up AWS Database Migration Service (DMS) tasks to replicate data in near real-time to another RDS instance in a different Region.
- D
Enable Multi-Region Amazon Aurora Global Database for faster recovery during regional outages.
Show answer and explanation
Correct answer: D
Explanation
To meet strict RTO (5 minutes) and RPO (1 minute) requirements, a solution must provide near real-time replication and automated failover capabilities. Amazon Aurora Global Database is specifically designed for this use case, offering sub-second replication and cross-Region failover in under a minute. Other options, such as automated backups or Read Replicas, are not sufficient for such stringent disaster recovery requirements.
- A. Incorrect.
While automated backups ensure data recovery, they do not meet the strict RPO and RTO requirements of 1 minute and 5 minutes, respectively, as restoring from backups can take longer.
- B. Incorrect.
Read Replicas provide improved read performance and can replicate data across Regions, but they do not allow for automatic failover or meet the RTO requirements.
- C. Incorrect.
AWS DMS can replicate data in near real-time but is not designed for high-availability or automated failover, which is critical for meeting the RTO requirement.
- D. Correct.
Amazon Aurora Global Database provides near real-time replication across Regions with RPOs of less than 1 second and the ability to fail over to a secondary Region in less than 1 minute, making it ideal for meeting the stated RTO and RPO requirements.