Question

A company runs an internal reporting application on EC2 instances backed by an Amazon RDS for PostgreSQL database in the us-east-1 Region. Management wants a disaster recovery plan for a full Regional outage but has stated the application is non-critical: a recovery time of up to 24 hours and data loss of up to a few hours are acceptable. The primary goal is to keep ongoing DR costs as low as possible. Which disaster recovery strategy best meets these requirements?

Accepted Answer

Implement a backup-and-restore strategy by copying automated RDS snapshots and AMIs to the DR Region, and provision the infrastructure only when a disaster is declared.

Answer

Deploy a warm standby with a scaled-down copy of the EC2 fleet and an RDS read replica always running in the DR Region.

Answer

Deploy a pilot light with a minimal always-on database replica in the DR Region and core servers kept stopped.

Answer

Deploy a multi-site active/active architecture with Route 53 latency-based routing across both Regions.