Certified Cloud Security Professional (CCSP)Cloud Platform and Infrastructure SecurityEasy
A cloud security architect is designing a highly available and resilient application in a public cloud environment. The architect wants to ensure that if an entire cloud region becomes unavailable, the application can continue to serve users with minimal downtime and data loss. Which disaster recovery strategy BEST addresses this requirement?
- AMulti-Region Active-Active
- BWarm Standby
- CBackup and Restore
- DPilot Light
Show answer & explanationAnswer & explanation
Correct answer: A. Multi-Region Active-Active
Multi-Region Active-Active deployment ensures that the application is fully operational in multiple, geographically dispersed regions simultaneously. If one region fails, traffic is automatically routed to the other active regions, providing the highest level of availability and minimal downtime.
Why the other options are wrong
- B. Warm Standby keeps a scaled-down version of the application running, but still requires scaling up and DNS changes, resulting in some downtime.
- C. Backup and Restore involves significant recovery time and data loss, making it unsuitable for minimal downtime.
- D. Pilot Light maintains a minimal core infrastructure in a recovery region and requires activation, leading to higher RTO than active-active.
Multi-Region Active-Active DR
A disaster recovery strategy where an application is fully deployed and active in multiple, geographically separate cloud regions, processing requests concurrently.
- Provides highest availability and lowest RTO/RPO.
- Routes traffic automatically to active regions upon failure.
- More complex and expensive to implement.
Memory trick: Always Active, Always Available, Across All Areas.