AWS Certified SysOps Administrator – AssociateReliability and Business ContinuityMedium
A company uses Amazon Aurora MySQL for its critical database. They require a disaster recovery solution that can recover the database in a different AWS Region with a Recovery Point Objective (RPO) of seconds and a Recovery Time Objective (RTO) of minutes. The solution must also allow for a quick failover with minimal data loss. Which Aurora feature should the SysOps Administrator configure?
- AAurora Read Replicas across regions
- BManual snapshot restore to another region
- CAurora Global Database
- DMulti-AZ deployment
Show answer & explanationAnswer & explanation
Correct answer: C. Aurora Global Database
Aurora Global Database is specifically designed for disaster recovery across regions, offering RPO of seconds and RTO of minutes. It uses dedicated infrastructure to replicate data with very low latency, enabling rapid failover to a secondary region. Multi-AZ is for within-region high availability, and Read Replicas are primarily for scaling reads, not for extremely low RPO/RTO DR.
Why the other options are wrong
- A. Aurora Read Replicas across regions are primarily for read scaling and offer asynchronous replication, which may not meet the RPO of seconds required for disaster recovery.
- B. Manual snapshot restore to another region would have a significantly higher RPO and RTO (hours to days) as it involves restoring from a point-in-time backup, which is too slow for the requirement.
- D. Multi-AZ deployment provides high availability within a single region by synchronously replicating data to a standby instance in another AZ, but it does not protect against regional outages.
Aurora Global Database
Aurora Global Database provides low-latency, cross-region replication for Aurora clusters, enabling fast disaster recovery with RPO of seconds and RTO of minutes.
- Designed for cross-region disaster recovery.
- RPO (Recovery Point Objective) of seconds.
- RTO (Recovery Time Objective) of minutes.
- Uses dedicated replication infrastructure.
- Supports up to five secondary regions.
Memory trick: Aurora Global Database: Your express train for DR across regions, fast RPO/RTO.