The Real Cost of a Second Data Center

Redundancy is not free resilience

A second region adds replication lag, split-brain risk, cross-region consistency puzzles, and a data-egress bill — all of which are new ways to fail. You buy availability only if you also invest in the operational discipline to run both halves.

Earn it with a real requirement

Most workloads reach their availability target with one region done well: good backups, fast restores, and a tested failover runbook. Reach for a second region when a regulator, a latency SLA, or a genuine blast-radius requirement demands it — not because the architecture diagram looks braver.