Deploy a managed disk that uses zone-redundant storage

This article covers how to deploy a disk that uses zone-redundant storage (ZRS) as a redundancy option. ZRS replicates your Azure managed disk synchronously across three Azure availability zones in the selected region. Each availability zone is a separate physical location with independent power, cooling, and networking.

For conceptual information on ZRS, see Zone-redundant storage for managed disks

Limitations

ZRS for managed disks have the following restrictions:

  • Only supported with premium solid-state drives (SSD) and standard SSDs.
  • Currently available only in the West US 2, West Europe, North Europe, and France Central regions.
  • Can't currently be used with Azure Backup or Azure Site Recovery.

Create a VM with a ZRS OS disk

  1. Sign in to the Azure portal.

  2. Navigate to Virtual machines and follow the normal VM creation process.

  3. Select a supported region and set Availability options to No infrastructure redundancy required.

    Screenshot of the VM creation workflow, basic pane, redundancy and regions are highlighted.

  4. Proceed to the Disks pane.

  5. Select your disk and select one of the ZRS disks in the drop down.

    Screenshot of the vm creation workflow, disks pane, OS disk dropdown is expanded with the ZRS premium SSD and standard SSD options highlighted.

  6. Proceed through the rest of the VM deployment, making any choices that you desire.

You've now deployed a VM with a ZRS OS disk.

Create a ZRS disk

  1. In the Azure portal, search for and select Disks.

  2. Select + Add to create a new disk.

  3. Select a supported region and Availability zone to None.

  4. Select Change size.

    Screenshot of the disk creation workflow, basics pane.

  5. Select one of the available ZRS disks and select OK.

    Screenshot of the disk creation workflow, select a disk size pane, ZRS disks highlighted.

  6. Continue through the deployment process.

You have now created a managed disk that uses ZRS.

Next steps