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Difficulty: EasyDesign Compute High Availability

You are designing a compute solution in Azure for a web application. The solution must meet the following requirements:
- The virtual machines (VMs) hosting the web application must have a guaranteed uptime SLA of 99.99%99.99\%.
- Incoming web traffic must be distributed across the VMs.

Which two actions should you include in the design to meet the requirements? (Select two.)

  1. Deploy the virtual machines across two or more Availability Zones in the same Azure region.Answer
  2. Deploy a Standard Load Balancer to distribute incoming traffic to the virtual machines.Answer
  3. C
    Deploy all virtual machines within a single Availability Zone.
  4. D
    Deploy a Basic Load Balancer to distribute incoming traffic to the virtual machines.

Answer

To achieve a 99.99%99.99\% uptime SLA and distribute traffic across the zones, you must deploy the virtual machines across two or more Availability Zones and use a Standard Load Balancer.
To meet the 99.99%99.99\% virtual machine uptime SLA, the virtual machines must be deployed across two or more Availability Zones. Distributing traffic across zonal virtual machines requires a Standard Load Balancer, which is zone-redundant and supports backend instances in different zones.

Step-by-Step Solution

1
Evaluate the SLA requirement for the virtual machines.
To meet the 99.99%99.99\% VM uptime SLA, the virtual machines must be deployed across two or more Availability Zones.
Microsoft offers a 99.99%99.99\% SLA for VMs only when two or more instances are deployed across different Availability Zones in the same region.
2
Select the appropriate load balancer SKU to distribute traffic across zones.
Choose a Standard Load Balancer.
The Standard SKU load balancer is required to route traffic to VMs in different Availability Zones, whereas the Basic SKU load balancer does not support this topology.

Key Concept

Designing compute high availability in Azure using Availability Zones and Standard Load Balancers to achieve a 99.99%99.99\% VM uptime SLA.
Estimated Time:1m 0s
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Topics

Design Compute High Availability

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