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Difficulty: EasyAzure Regions, Availability Zones, and Region Pairs

A retail company plans to migrate its inventory system to Azure. The system must remain online even if a single datacenter within their selected Azure region experiences a power outage. Which Azure feature should they use to meet this requirement?

  1. A
    Region Pairs
  2. Availability ZonesAnswer
  3. C
    Resource Groups
  4. D
    Multiple Azure Regions

Answer

Availability Zones
Availability Zones are unique physical locations within an Azure region. Each zone is made up of one or more datacenters equipped with independent power, cooling, and networking. Because of this isolation, if one zone goes down (e.g., due to a local power outage), the other zones continue to function, providing high availability within that region.

Step-by-Step Solution

1
Identify the primary requirement
The requirement is to protect an application workload from a power outage affecting a single datacenter within a selected region.
This establishes that the solution must provide fault isolation at the datacenter level within a single region.
2
Evaluate the architectural features of Azure
Availability Zones offer independent power, cooling, and networking infrastructure for datacenters inside the same region.
By distributing resources across Availability Zones, the system remains online even if one zone (datacenter) fails.

Key Concept

Azure Availability Zones offer high availability and fault tolerance within a single region by isolating datacenters from power, cooling, or networking failures.
Estimated Time:45s
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Topics

Azure Regions, Availability Zones, and Region Pairs

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