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Difficulty: EasyReliability, Predictability, and Disaster Recovery

A company hosts a critical database in Microsoft Azure. The systems architect must ensure that the database can be recovered and restored to service even if the primary Azure region suffers a complete, catastrophic outage due to a natural disaster. Which cloud concept or practice is directly responsible for meeting this requirement?

  1. Disaster recoveryAnswer
  2. B
    High availability
  3. C
    Elasticity
  4. D
    Replicating resources exclusively across Availability Zones in the primary region

Answer

Disaster recovery
Disaster recovery is specifically designed to restore applications and data in the event of a catastrophic failure, such as a complete regional outage, typically by failing over services to a secondary geographical region.

Step-by-Step Solution

1
Analyze the failure scope in the scenario.
The failure is a complete, catastrophic outage of the primary Azure region.
To choose the correct capability, we must understand the scale of the disaster we are protecting against.
2
Evaluate the capabilities of the options against a full regional outage.
High availability and Availability Zones protect against localized failures within a region, and elasticity manages resource scaling. Only disaster recovery handles recovery from a complete regional loss by failing over to a separate region.
This determines which cloud concept is designed to restore operations after a full regional disaster.

Key Concept

Disaster Recovery vs. High Availability in Azure
Estimated Time:45s
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Topics

Reliability, Predictability, and Disaster Recovery

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