A 911 CAD system requires an RTO of minutes and near-zero RPO across Regions. A team proposes pilot light only. What should the architect recommend?
Select an answer to reveal the explanation.
Short Explanation
Pilot light is a night-light—you still need time to flip breakers and warm the building. 911 CAD that must be up in minutes with almost no data loss needs warm standby or true multi-site with continuous replication. Weekly Glacier restores or a single AZ are non-starters for that bar.
Full Explanation
AWS DR patterns trade cost for recovery speed: backup/restore is slowest, pilot light keeps minimal core infrastructure, warm standby runs a scaled-down live environment, and multi-site active-active serves production in multiple Regions. Minute-scale RTO with near-zero RPO requires continuous data replication and enough pre-provisioned capacity that pilot light scale-out delay is unacceptable. Weekly archive restores and single-AZ designs cannot meet those objectives for a 911 CAD workload.