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Zorluk: ZorAzure Regions, Availability Zones, and Region Pairs

A company is planning to deploy a highly available web application and its database in Azure. The primary infrastructure must be protected against localized datacenter failures (such as power, cooling, or networking outages) within the primary region. Additionally, a disaster recovery plan must replicate database backups to a secondary region located at least 300 miles away. An administrator creates a resource group named rg-prod-app and sets its location to East US.

Which of the following configurations correctly implements these resiliency requirements while adhering to Azure resource group rules?

  1. Deploy the application virtual machines across multiple Availability Zones in East US, replicate the database backups to West US, and place all resources—including those in West US—within the rg-prod-app resource group.Cevap
  2. B
    Deploy the application virtual machines across multiple Availability Zones in East US, replicate the database backups to West US, but create a new resource group in West US for the secondary resources because resources must match the location of their containing resource group.
  3. C
    Deploy the application virtual machines across Availability Zones that span between East US and West US to protect against localized datacenter failures, and replicate the database backups to West US.
  4. D
    Deploy the application virtual machines in a single datacenter in East US because Availability Zones are designed for region-wide disaster recovery rather than high availability, and replicate the database backups to West US.

Cevap

Deploy the application virtual machines across multiple Availability Zones in East US, replicate the database backups to West US, and place all resources—including those in West US—within the rg-prod-app resource group.
The correct configuration uses Availability Zones within the primary East US region to protect VMs from local datacenter outages. It uses West US (the regional pair for East US) for disaster recovery replication, meeting the 300-mile separation requirement. Finally, it correctly utilizes the rg-prod-app resource group to contain resources from both East US and West US regions, as Azure resource groups can store resources from different regions.

Adım Adım Çözüm

1
Analyze the high availability (HA) requirement for localized datacenter failures.
Identify that Azure Availability Zones are physically separate datacenters within a single region (East US) that protect against local failures (power, cooling, network).
This satisfies the requirement to protect the application VMs within the primary region.
2
Analyze the disaster recovery (DR) requirement for replication to a secondary region at least 300 miles away.
Identify that West US is the default regional pair for East US, providing the necessary distance for DR replication.
This satisfies the database backup replication requirement.
3
Analyze the resource group location constraint.
Recall that a resource group acts as a logical container and its location does not restrict the location of the resources it contains.
This allows resources in both East US and West US to be managed under the single rg-prod-app resource group.

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Azure Regions, Availability Zones, and Region Pairs
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Azure Regions, Availability Zones, and Region Pairs

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