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--- title: Convert a disk from LRS to ZRS description: Learn how to convert a managed disk from locally redundant storage to zone-redundant storage. author: roygara ms.service: azure-disk-storage ms.topic: concept-article ms.date: 10/19/2023 ms.author: rogarana ms.custom: references_regions, devx-track-azurecli, devx-track-azurepowershell, portal # Customer intent: As an IT administrator managing cloud resources, I want to convert managed disks from locally redundant storage to zone-redundant storage, so that I can enhance data availability and resilience across multiple zones. --- # Convert a disk from LRS to ZRS This article explains how to convert an existing disk from locally redundant storage (LRS) to zone-redundant storage (ZRS). For conceptual information on ZRS, see [Zone-redundant storage for managed disks](disks-redundancy.md#zone-redundant-storage-for-managed-disks) ## Limitations [!INCLUDE [disk-storage-zrs-limitations](./includes/disk-storage-zrs-limitations.md)] ## Regional availability [!INCLUDE [disk-storage-zrs-regions](./includes/disk-storage-zrs-regions.md)] ## Determine infrastructure redundancy Before you convert a disk from LRS to ZRS, you must first identify whether the disk is zonal or regional. How you migrate your disk changes based on whether it's zonal or regional. # [Portal](#tab/azure-portal) 1. Sign in to the Azure portal 1. Navigate to your disk and look under **Availability zone** on the **Overview** tab. 1. If the value is **No infrastructure redundancy required** you have a regional disk. Use [Regional migration](#regional-migration) to migrate your disk. 1. If the value is anything else, you have a zonal disk. Use [Zonal migration](#zonal-migration) to migrate your disk. # [Azure PowerShell](#tab/azure-powershell) Run the following command and observe the output. If there's no value in **Zones**, you have a regional disk. Use [Regional migration](#regional-migration) to migrate your disk. Otherwise, you have a zonal disk. Use [Zonal migration](#zonal-migration) to migrate your disk. ```azurepowershell Get-AzDisk -DiskName your_disk_name_here -ResourceGroupName your_RG_name_here ``` # [Azure CLI](#tab/azure-cli) Run the following command and observe the output. If there's no value in **zones** you have a regional disk. Use [Regional migration](#regional-migration) to migrate your disk. Otherwise, you have a zonal disk. Use [Zonal migration](#zonal-migration) to migrate your disk. ```azurecli az disk show --name your_disk_name_here --resource-group your_RG_name_here ``` --- ## Regional migration You can directly change the disk type of regional disks with the following options. # [Portal](#tab/azure-portal) Follow these steps: 1. Sign in to the [Azure portal](https://portal.azure.com). 1. Select the VM from the list of **Virtual machines**. 1. If the VM isn't stopped, select **Stop** at the top of the VM **Overview** pane, and wait for the VM to stop. 1. In the pane for the VM, select **Disks** from the menu. 1. Select the disk that you want to convert. 1. Select **Size + performance** from the menu. 1. Change the **Account type** from the original disk type to the desired disk type. 1. Select **Save**, and close the disk pane. The disk type conversion is instantaneous. You can start your VM after the conversion. # [Azure PowerShell](#tab/azure-powershell) ```azurepowershell-interactive $diskName = 'yourDiskName' # resource group that contains the managed disk $rgName = 'yourResourceGroupName' # Choose between StandardSSD_ZRS or Premium_ZRS based on your scenario $storageType = 'Premium_ZRS' # Premium capable size $size = 'Standard_DS2_v2' $disk = Get-AzDisk -DiskName $diskName -ResourceGroupName $rgName # Get parent VM resource $vmResource = Get-AzResource -ResourceId $disk.ManagedBy # Stop and deallocate the VM before changing the storage type Stop-AzVM -ResourceGroupName $vmResource.ResourceGroupName -Name $vmResource.Name -Force $vm = Get-AzVM -ResourceGroupName $vmResource.ResourceGroupName -Name $vmResource.Name # Change the VM size to a size that supports Premium storage # Skip this step if converting storage from Premium to Standard $vm.HardwareProfile.VmSize = $size Update-AzVM -VM $vm -ResourceGroupName $rgName # Update the storage type $disk.Sku = [Microsoft.Azure.Management.Compute.Models.DiskSku]::new($storageType) $disk | Update-AzDisk Start-AzVM -ResourceGroupName $vm.ResourceGroupName -Name $vm.Name ``` # [Azure CLI](#tab/azure-cli) ```azurecli #resource group that contains the managed disk $rgName='yourResourceGroup' #Name of your managed disk diskName='yourManagedDiskName' #Premium capable size #Required only if converting from Standard to Premium size='Standard_DS2_v2' #Choose between StandardSSD_ZRS or Premium_ZRS based on your scenario sku='Premium_ZRS' #Get the parent VM Id vmId=$(az disk show --name $diskName --resource-group $rgName --query managedBy --output tsv) #Deallocate the VM before changing the size of the VM az vm deallocate --ids $vmId #Change the VM size to a size that supports Premium storage #Skip this step if converting storage from Premium to Standard az vm resize --ids $vmId --size $size # Update the SKU az disk update --sku $sku --name $diskName --resource-group $rgName az vm start --ids $vmId ``` --- ## Zonal migration In this section, you migrate the data from your current managed disks to ZRS managed disks. If you have a zonal disk, you can't directly change its type. You must take a snapshot and use that snapshot to create a new ZRS disk. #### Step 1: Create your snapshot The easiest and cleanest way to create a snapshot is to take one while the VM is offline. See [Snapshots](../virtual-machines/backup-and-disaster-recovery-for-azure-iaas-disks.md#azure-managed-disk-snapshots). If you choose this approach, expect some downtime. To create a snapshot of your VM by using the Azure portal, PowerShell, or Azure CLI, see [Create a snapshot of a virtual hard disk](../virtual-machines/snapshot-copy-managed-disk.md). If you're taking a snapshot of a disk that's attached to a running VM, read the guidance in [Snapshots](backup-and-disaster-recovery-for-azure-iaas-disks.md#azure-managed-disk-snapshots) before continuing. >[!NOTE] > The source managed disks remain intact with their current configurations and you'll continue to be billed for them. To avoid this, you must manually delete the disks once you've finished your migration and confirmed the new disks are working. For more information, see [Find and delete unattached Azure managed and unmanaged disks](windows/find-unattached-disks.md). #### Step 2: Migrate the data on your managed disks Now that you have snapshots of your original disks, you can use them to create ZRS managed disks. ##### Migrate your data to ZRS managed disks 1. Create a ZRS managed disk from the source disk snapshot by using the following Azure CLI snippet: ```azurecli # Create a new ZRS managed disks using the snapshot Id and the SKU supported storageType=Premium_ZRS location=westus2 az disk create --resource-group $resourceGroupName --name $diskName --sku $storageType --size-gb $diskSize --source $snapshotId ``` #### Step 3: Create a new VM with your new disks Now that you have migrated your data to ZRS managed disks or zonal managed disks, create a new VM with these new disks set as the OS and data disks: ```azurecli az vm create -g MyResourceGroup -n MyVm --attach-os-disk newZonalOSDiskCopy --attach-data-disks newZonalDataDiskCopy --os-type linux ```