CompTIA Cloud Essentials+ (CLO-002)Cloud ConceptsHard
A cloud architect is designing a disaster recovery solution for a critical application that must have near-zero downtime and minimal data loss (RPO < 15 minutes). The application is currently deployed in a single region. Which strategy should be employed to meet these demanding recovery objectives?
- APilot Light deployment in another region
- BWarm Standby deployment in another region
- CMulti-region Active-Active deployment
- DBackup and Restore to another region
Show answer & explanationAnswer & explanation
Correct answer: C. Multi-region Active-Active deployment
For near-zero downtime and minimal data loss (RPO < 15 min), an active-active multi-region deployment is required. This means the application is fully operational in multiple regions simultaneously, allowing immediate failover with no data loss and continuous operations.
Why the other options are wrong
- A. Pilot Light involves a minimal, always-on core, with full infrastructure provisioned on demand, leading to higher RTO and RPO than required.
- B. Warm Standby has a fully functional but scaled-down environment, offering better RTO/RPO than Pilot Light but still not near-zero.
- D. Backup and Restore has the highest RTO and RPO, unsuitable for near-zero downtime/data loss.
Multi-region Active-Active
A disaster recovery strategy where an application is fully deployed and operational in two or more geographically separate regions, with traffic distributed between them.
- Provides highest availability and resilience.
- Near-zero RTO and RPO.
- Most complex and expensive to implement.
Memory trick: BR-PW-MA: Backups Really Protect, While Many Active.