Work out rto and rpo planning instantly with clear inputs, formula shown and shareable results.
RPO dictates the replication technology: anything under a minute requires synchronous or continuous replication, while fifteen minutes can be met with asynchronous log shipping. RTO dictates the standby posture. Pricing an RTO-length outage against the cost of a faster recovery architecture is how these targets should be set, rather than by aspiration.
RTO and RPO implications
data at risk = change rate x RPO; backup frequency = 1440 / RPO minutes; outage cost = hourly downtime cost x RTO
Only with synchronous replication, which adds write latency proportional to the round trip between sites. That latency cost is why near-zero rather than zero is usually chosen.
Because they are aspirations rather than measurements. Only a full recovery rehearsal produces a defensible number, and the first rehearsal almost always exceeds the target.