How to design disaster recovery in the cloud

· Category: Cloud Computing

Short answer

Disaster recovery in the cloud uses backups, replication, and automated failover to restore operations after catastrophic failures.

Steps

  1. Define RTO (Recovery Time Objective) and RPO (Recovery Point Objective).
  2. Replicate data to a secondary region.
  3. Automate infrastructure deployment with IaC.
  4. Test failover and failback procedures regularly.
  5. Document runbooks and communication plans.

Tips

  • Pilot light: keep a minimal environment ready; scale on demand.
  • Warm standby: run a reduced-capacity secondary environment.
  • Hot standby: full active-active deployment for near-zero RTO.

Common issues

  • Untested DR plans fail when needed most.
  • Cross-region replication costs and latency are often underestimated.