Overview of Availability Zones in Azure (Preview)

Availability Zones help to protect you from datacenter-level failures. They are located inside an Azure region, and each one has its own independent power source, network, and cooling. To ensure resiliency, there's a minimum of three separate zones in all enabled regions. The physical and logical separation of Availability Zones within a region protects applications and data from zone-level failures.

conceptual view of one zone going down in a region

Regions that support Availability Zones

  • East US 2
  • West Europe

Services that support Availability Zones

The Azure services that support Availability Zones are:

  • Linux Virtual Machines
  • Windows Virtual Machines
  • Zonal Virtual Machine Scale Sets
  • Managed Disks
  • Load Balancer

Supported virtual machine size families

  • Av2
  • Dv2
  • DSv2

Get started with the Availability Zones preview

The Availability Zones preview is available in the East US 2 and West Europe regions for specific Azure services.

  1. Sign up for the Availability Zones preview.
  2. Sign in to your Azure subscription.
  3. Choose a region that supports Availability Zones.
  4. Use one of the following links to start using Availability Zones with your service.

Next steps