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Disaster Recovery (DR) planning ensures that your workloads can recover from catastrophic failures — region-wide outages, data corruption, ransomware attacks, or natural disasters. The GCP Architecture Framework emphasises that DR is not optional for production workloads; it is a fundamental requirement that must be designed, tested, and maintained continuously.
| Metric | Definition | Question It Answers |
|---|---|---|
| Recovery Time Objective (RTO) | Maximum acceptable time from disaster to full recovery | How quickly must you be back online? |
| Recovery Point Objective (RPO) | Maximum acceptable data loss measured in time | How much data can you afford to lose? |
| Workload | RTO | RPO | DR Pattern |
|---|---|---|---|
| E-commerce platform | 15 minutes | 0 (zero data loss) | Hot standby |
| Internal reporting tool | 4 hours | 1 hour | Warm standby |
| Development environment | 24 hours | 24 hours | Cold standby |
| Static marketing website | 1 hour | 24 hours | Backup and restore |
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