Question

Difficulty: HardReliability, Predictability, and Disaster Recovery

Determine whether the following statement is true or false: Deploying a web application across multiple Availability Zones within a single Azure region guarantees disaster recovery in the event of a region-wide outage, as Azure automatically replicates and fails over virtual machine workloads to a paired region during a regional disaster.

Answer: Answer

Answer

False
The statement is false because Availability Zones are designed to protect against datacenter failures within a single region, not region-wide disasters. Furthermore, Azure does not automatically replicate or failover virtual machine workloads across regions; this must be explicitly configured as part of a disaster recovery plan.

Step-by-Step Solution

1
Analyze the scope of Availability Zones in Azure.
Availability Zones protect against datacenter failures within a single region, not against an outage affecting the entire region.
Each zone is an isolated location within an Azure region, meaning a region-wide outage will affect all Availability Zones in that region.
2
Evaluate the replication and failover behavior for Azure Virtual Machines.
Azure does not automatically replicate and fail over standard virtual machines to a paired region.
Cross-region disaster recovery must be explicitly configured using tools like Azure Site Recovery, and is not a default or automatic behavior of deploying to multiple zones within a single region.

Key Concept

Disaster recovery protects against regional outages through cross-region replication, whereas Availability Zones provide high availability within a single region.
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