CompTIA Cloud Essentials+ (CLO-002)Management and Technical OperationsHard
A cloud architect is designing a highly available and resilient application that needs to withstand an entire cloud region outage. The application must continue operating with minimal downtime and data loss. Which disaster recovery strategy would be most appropriate for this scenario?
- AMulti-Region Active-Active
- BBackup and Restore
- CPilot Light
- DWarm Standby
Show answer & explanationAnswer & explanation
Correct answer: A. Multi-Region Active-Active
Multi-Region Active-Active provides the highest level of availability and resilience, allowing the application to run simultaneously in multiple regions. In case of a region outage, traffic can be seamlessly redirected to the healthy region with virtually no downtime or data loss, fulfilling the requirement to withstand an entire region outage with minimal impact.
Why the other options are wrong
- B. Backup and Restore has the highest RTO and RPO, making it unsuitable for minimal downtime and data loss requirements during a region outage.
- C. Pilot Light involves a minimal set of resources in a secondary region, requiring activation and scaling, which introduces recovery time.
- D. Warm Standby has a fully functional but scaled-down environment, requiring some time to scale up and redirect traffic, thus not providing 'minimal downtime' in the face of a region outage as effectively as active-active.
Multi-Region Active-Active DR
A disaster recovery strategy where an application runs simultaneously in multiple cloud regions, with traffic distributed across all active regions. This provides the highest availability and resilience.
- Applications are fully operational in all regions.
- Provides near-zero RTO and RPO.
- Highest cost among DR strategies.
- Ideal for critical applications requiring continuous availability.
Memory trick: DR plans range from waiting to always-on.