The 3‑2‑1 Rule Refresher
- 3 copies of your data
- 2 different media (e.g., local NAS + cloud)
- 1 off‑site/off‑line copy (immutable)
Choosing Backup Types
- Image‑based for full‑system recovery
- File‑level for granular restores
- Snapshot & replication for low‑RPO workloads
Testing & Documentation
Schedule quarterly restore drills; record RTO/RPO metrics and update the Disaster Recovery Plan (DRP).