Do not let DR violate residency
Balance disaster recovery targets with data residency, replication, and evidence requirements.
Constraint collision The business wants four-hour recovery and EU-only regulated data. The cheapest backup module sends snapshots outside the approved geography. Availability and compliance are both architecture requirements. DR constraint stack RTO + RPO + Residency + Evidence A DR design is credible only when it satisfies recovery time, data loss, data location, and proof obligations. Shortcut Replicate wherever restore is cheapest. The failover path keeps both business and regulatory promises. Recovery design must preserve the constraints of normal design. 01 Classify 02 Replicate 03 Prove Classify the data Decision 1
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