A company needs a second region ready to take over within ~10 minutes if the primary region fails, but wants to avoid running full duplicate production capacity continuously. Which DR strategy fits best?
A) Backup and Restore.
B) Warm Standby — a scaled-down but always-running copy that scales up on failover.
C) Multi-Site Active-Active at full capacity.
D) No DR; rely on a single region’s high availability.
Correct Answer: B
Explanation: Warm Standby keeps a minimal functional copy running in the second region and scales it up on failover — balancing a moderate RTO (minutes) against lower steady-state cost than active-active. (A) is too slow (hours). (C) meets RTO but at full duplicate cost. (D) doesn’t survive a regional failure.