Domain 2.2: Business Continuity — AWS SAP-C02 Practice Question 65

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Define the 'Warm Standby' DR pattern: scaled-down but running compute, continuous data replication, and active routing.

Full Answer

The 'Warm Standby' disaster recovery strategy involves ensuring that a scaled-down, but fully functional, copy of your production environment is always running in the DR region. This means deploying a smaller Auto Scaling group of EC2 instances and an ALB. Data is continuously replicated using an RDS cross-region read replica. Because the environment is running, you can use Route 53 weighted routing to send a small amount of traffic (e.g., 5%) to the DR region to continuously verify its health.

Common mistakes

Confusing Warm Standby with Pilot Light (where compute is off) or Active-Active (where compute is at 100% capacity).

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Practice the full AWS Solutions Architect Professional SAP-C02 Practice Exam 5

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