Question

Difficulty: MediumAzure Regions, Availability Zones, and Region Pairs

An organization is designing a disaster recovery (DR) strategy for a critical transaction database. The solution must protect against a broad-scale regional outage, such as a major natural disaster, while ensuring that the replication data traffic stays on the Microsoft backbone network and adheres to national data residency regulations by remaining within the same country. Which Azure architectural concept should the organization utilize?

  1. A
    Azure Availability Zones, which replicate the application across three geographically separated regions within the same continent to ensure high availability.
  2. Azure Region Pairs, which provide automatic cross-region replication between two regions located within the same geographic boundary, typically separated by at least 300 miles.Answer
  3. C
    Azure Availability Sets, which group virtual machines within a single datacenter to guarantee recovery from a broad-scale regional disaster.
  4. D
    Azure Resource Groups, which automatically replicate all nested resources to a secondary region to ensure they inherit the resource group's location.

Answer

Azure Region Pairs, which provide automatic cross-region replication between two regions located within the same geographic boundary, typically separated by at least 300 miles.
Azure Region Pairs automatically pair two regions within the same geographic boundary (typically at least 300 miles apart) to enable disaster recovery replication while keeping traffic on the Microsoft backbone network and complying with national data residency requirements.

Step-by-Step Solution

1
Analyze the requirements for disaster recovery (DR) from a broad-scale regional outage while complying with national data residency laws.
Identified that the solution must support regional failover (disaster recovery) and keep data replication within the same country (national border).
This narrows down the candidates to cross-region solutions that respect geographic boundaries.
2
Evaluate the architectural characteristics of Azure Region Pairs against the requirements.
Confirmed that Azure Region Pairs are paired within the same geography (except Brazil South), reside at least 300 miles apart for disaster isolation, and utilize the private Microsoft backbone network for replication.
This directly aligns with the scenario's requirements for DR, regional isolation, private networking, and data residency.

Key Concept

Azure Region Pairs provide automatic cross-region replication and disaster recovery capability within the same geographic boundary.
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