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Difficulty: EasyConfigure VMs for High Availability

A healthcare startup, CarePulse, plans to deploy two virtual machines named VM-App1 and VM-App2 to run a clinical application in the West US 3 region. The application requires protection against datacenter-wide failures with the highest possible service level agreement (SLA) for virtual machine uptime. Which high availability option should you select to meet this requirement?

  1. A
    Availability Sets
  2. Availability ZonesAnswer
  3. C
    A single Availability Set configured to span three separate Availability Zones
  4. D
    A Proximity Placement Group

Answer

Availability Zones
Deploying virtual machines across Availability Zones protects workloads against entire datacenter outages by placing the resources in physically separate facilities within the region, which also yields the highest VM uptime SLA.

Step-by-Step Solution

1
Analyze the core high availability requirement.
The application requires protection against datacenter-wide failures with the highest VM uptime SLA.
Understanding the failure domain requirements helps determine the appropriate high availability technology in Azure.
2
Compare Availability Zones and Availability Sets.
Availability Zones place VMs in physically separate datacenters within a region, protecting against datacenter-wide outages. Availability Sets only protect against hardware and maintenance failures within a single datacenter.
Evaluating how each option manages failure domains ensures that the solution meets the requirement.
3
Select the correct deployment option.
Availability Zones are selected as they meet the protection scope and offer the highest VM uptime SLA.
Deploying the VMs across separate Availability Zones satisfies the design requirements.

Key Concept

Azure Virtual Machine High Availability options including Availability Sets and Availability Zones.
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Topics

Configure VMs for High Availability

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