disaster recovery

Four tiers, four bills. Stating RTO and RPO per tier turns a vague resilience wish into a decision leadership can actually price, and the testing story is where candidates fold.

Two artifacts hide under 'Kubernetes backup' and they recover different things. The misses are what decides whether a restore works: volume bytes, encryption keys, and everything that never lived in etcd at all.

The classic napkin-math question. The number in the prompt is the question. Drawing the architecture before doing the arithmetic produces a design the physics forbids, and the arithmetic takes a minute.

An untested backup is a belief, not a control. The design that matters is the one that restores automatically on a schedule and verifies the result, because that is the only thing that produces a recovery time you can quote.