ExpertMedium1 markMultiple Choice
AWS SAA-C03 · Question 30 · Domain 2.2: Highly Available Architectures
A company is implementing a disaster recovery strategy. They want to keep a scaled-down version of their core infrastructure running in a secondary region. The database must be continuously replicated, but the application servers will only be provisioned when a disaster is declared. Which DR strategy is this?
A company is implementing a disaster recovery strategy. They want to keep a scaled-down version of their core infrastructure running in a secondary region. The database must be continuously replicated, but the application servers will only be provisioned when a disaster is declared. Which DR strategy is this?
Answer options:
A.
Backup and Restore
B.
Pilot Light
C.
Warm Standby
D.
Multi-Site Active/Active
How to approach this question
Understand the 4 DR strategies. Database running + compute off = Pilot Light.
Full Answer
B.Pilot Light✓ Correct
Pilot Light
The Pilot Light disaster recovery strategy provisions a small part of your infrastructure (usually the database) to run continuously in the DR region. The rest of the infrastructure (like EC2 instances) is defined in templates but not turned on until a disaster occurs.
Common mistakes
Confusing Pilot Light with Warm Standby. Warm Standby has compute running at a minimum capacity, while Pilot Light has compute turned off entirely.
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