ExpertMedium1 markMultiple Choice
AZ-900 · Question 15 · Domain 1.4: Additional Cloud Concepts
What is the primary difference between High Availability (HA) and Disaster Recovery (DR)?
What is the primary difference between High Availability (HA) and Disaster Recovery (DR)?
Answer options:
A.
HA focuses on keeping services running during localized failures, while DR focuses on restoring services after a catastrophic event.
B.
HA is used for IaaS, while DR is used for PaaS.
C.
HA requires manual intervention, while DR is always automated.
D.
HA is a security feature, while DR is a performance feature.
How to approach this question
Compare the scope of failures each concept is designed to handle.
Full Answer
A.HA focuses on keeping services running during localized failures, while DR focuses on restoring services after a catastrophic event.✓ Correct
HA focuses on keeping services running during localized failures, while DR focuses on restoring services after a catastrophic event.
High Availability ensures your application stays up despite minor, localized failures (e.g., a VM crashing). Disaster Recovery is a plan and set of tools to recover your application in a different location if a major disaster destroys the primary location.
Common mistakes
Treating HA and DR as the exact same thing.
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