AWS Certified Solutions Architect Professional Exam Question : NO 4

An ERP application is deployed across multiple AZs in a single region. In the event of
failure, the Recovery Time Objective (RTO) must be less than 3 hours, and the Recovery
Point Objective (RPO) must be 15 minutes. The customer realizes that data corruption
occurred roughly 1.5 hours ago. What DR strategy could be used to achieve this RTO and
RPO in the event of this kind of failure?



A. Take hourly DB backups to EC2 instance store volumes with transaction logs stored In
      S3 every 5 minutes.
B. Use synchronous database master-slave replication between two availability zones.
C. Take hourly DB backups to S3, with transaction logs stored in S3 every 5 minutes.
D. Take 15 minute DB backups stored in Glacier with transaction logs stored in S3 every 5
     minutes.