CompTIA Cloud+ (CV0-004)Cloud ArchitectureHard
A cloud engineer is designing a geographically dispersed application that requires extremely low Recovery Point Objective (RPO) and Recovery Time Objective (RTO) in the event of a regional outage. Data consistency across regions is paramount. Which disaster recovery strategy would best meet these stringent requirements?
- APilot Light
- BMulti-Region Active/Active
- CBackup and Restore
- DWarm Standby
Show answer & explanationAnswer & explanation
Correct answer: B. Multi-Region Active/Active
Multi-Region Active/Active deployments replicate data and run applications concurrently in multiple regions. This allows for near-zero RPO and RTO as traffic can be immediately redirected to the healthy region, ensuring high availability and data consistency.
Why the other options are wrong
- A. Pilot Light involves deploying a minimal set of resources in the DR region, which requires time to scale up, resulting in higher RTO.
- C. Backup and Restore has a high RPO and RTO as data needs to be restored and applications rebuilt after an outage.
- D. Warm Standby has pre-provisioned resources but still requires some manual or automated steps to fully activate, leading to a higher RTO than active/active.
Multi-Region Active/Active DR
A disaster recovery strategy where full application stacks are deployed and actively serving traffic in multiple geographic regions simultaneously.
- Offers near-zero RPO and RTO.
- Requires advanced data synchronization mechanisms.
- Highest cost among DR strategies.
Memory trick: Active/Active is like having two fully staffed, identical stores open at the same time in different cities.