You are designing a Disaster Recovery (DR) plan for a critical application. The business requires a 'Warm Standby' approach to balance cost and recovery time. How should you architect this in GCP?

Answer options:

Keep the DR region completely empty and deploy the application via Terraform only after a disaster is declared.

Run a scaled-down version of the application in the DR region, and scale it up only when a disaster occurs.

Run the application at full capacity in both regions simultaneously and load balance between them.

Store daily backups in Cloud Storage and restore them to a new region during a disaster.

How to approach this question

Understand the definitions of Cold, Warm, and Hot DR strategies.

Full Answer

B.Run a scaled-down version of the application in the DR region, and scale it up only when a disaster occurs.✓ Correct

Run a scaled-down version of the application in the DR region, and scale it up only when a disaster occurs.

In a Warm Standby architecture, a scaled-down version of the environment is always running in the DR region. This allows for a much faster RTO than Cold Standby, but costs significantly less than a Hot Standby (Active-Active) setup.

Common mistakes

Confusing Warm Standby with Active-Active (C).

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