Question

Difficulty: MediumConfigure VMs for High Availability

Vortex Analytics is planning to deploy a new web application on Azure virtual machines in the North Europe region. The application requires a minimum virtual machine uptime SLA of 99.99%99.99\% and protection against datacenter-wide failures. You will deploy multiple virtual machines named VM-App-Prod1, VM-App-Prod2, and VM-App-Prod3. You need to configure the high availability and load balancing solution. Which of the following configuration steps should you perform? Select two.

  1. Deploy the virtual machines across two or more Availability Zones in the North Europe region.Answer
  2. Associate the virtual machines with the backend pool of an Azure Standard Load Balancer.Answer
  3. C
    Deploy the virtual machines in an Availability Set that spans across multiple Availability Zones in the North Europe region.
  4. D
    Associate the virtual machines with the backend pool of an Azure Basic Load Balancer to distribute zone-redundant traffic.

Answer

Deploy the virtual machines across two or more Availability Zones and associate them with the backend pool of an Azure Standard Load Balancer.
Deploying virtual machines across multiple Availability Zones provides physical separation within an Azure region, protecting against datacenter-wide outages and meeting the 99.99%99.99\% SLA requirement. A Standard Load Balancer is required to distribute traffic to virtual machines deployed across multiple zones, as it supports zone-redundant backend pools.

Step-by-Step Solution

1
Analyze the SLA and high availability requirements.
The application requires a 99.99%99.99\% SLA and protection against datacenter-wide failures.
This requirement determines the deployment target. Availability Sets only guarantee up to 99.95%99.95\% SLA and do not protect against datacenter-wide outages, whereas Availability Zones guarantee 99.99%99.99\% SLA and protect against datacenter failures.
2
Determine the deployment strategy for the virtual machines.
Select Availability Zones as the deployment target.
Deploying the virtual machines across two or more Availability Zones meets the 99.99%99.99\% SLA and datacenter-protection requirements.
3
Choose the appropriate load balancer tier.
Select an Azure Standard Load Balancer.
A Standard Load Balancer is required for distributing traffic across Availability Zones, as Basic Load Balancers do not support zone-redundant backend pools or zones.

Key Concept

Azure Virtual Machine High Availability configurations using Availability Zones and Standard Load Balancer
Estimated Time:1m 30s
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