Export/Copy a snapshot to a storage account in different region with CLI

This script exports a managed snapshot to a storage account in different region. It first generates the SAS URI of the snapshot and then uses it to copy it to a storage account in different region. Use this script to maintain backup of your managed disks in different region for disaster recovery.

If you don't have an Azure subscription, create an Azure free account before you begin.


Sample script

Launch Azure Cloud Shell

The Azure Cloud Shell is a free interactive shell that you can use to run the steps in this article. It has common Azure tools preinstalled and configured to use with your account.

To open the Cloud Shell, just select Try it from the upper right corner of a code block. You can also launch Cloud Shell in a separate browser tab by going to https://shell.azure.com.

When Cloud Shell opens, verify that Bash is selected for your environment. Subsequent sessions will use Azure CLI in a Bash environment, Select Copy to copy the blocks of code, paste it into the Cloud Shell, and press Enter to run it.

Sign in to Azure

Cloud Shell is automatically authenticated under the initial account signed-in with. Use the following script to sign in using a different subscription, replacing <Subscription ID> with your Azure Subscription ID. If you don't have an Azure subscription, create an Azure free account before you begin.

subscription="<subscriptionId>" # add subscription here

az account set -s $subscription # ...or use 'az login'

For more information, see set active subscription or log in interactively

Run the script

#Provide the subscription Id where snapshot is created

#Provide the name of your resource group where snapshot is created

#Provide the snapshot name 

#Provide Shared Access Signature (SAS) expiry duration in seconds e.g. 3600.
#Know more about SAS here: https://docs.microsoft.com/en-us/azure/storage/storage-dotnet-shared-access-signature-part-1

#Provide storage account name where you want to copy the snapshot. 

#Name of the storage container where the downloaded snapshot will be stored

#Provide the key of the storage account where you want to copy snapshot. 

#Provide the name of the VHD file to which snapshot will be copied.

az account set --subscription $subscriptionId

sas=$(az snapshot grant-access --resource-group $resourceGroupName --name $snapshotName --duration-in-seconds $sasExpiryDuration --query [accessSas] -o tsv)

az storage blob copy start --destination-blob $destinationVHDFileName --destination-container $storageContainerName --account-name $storageAccountName --account-key $storageAccountKey --source-uri $sas

Clean up resources

Run the following command to remove the resource group, VM, and all related resources.

az group delete --name myResourceGroupName

Sample reference

This script uses following commands to generate SAS URI for a managed snapshot and copies the snapshot to a storage account using SAS URI. Each command in the table links to command specific documentation.

Command Notes
az snapshot grant-access Generates read-only SAS that is used to copy underlying VHD file to a storage account or download it to on-premises
az storage blob copy start Copies a blob asynchronously from one storage account to another

Next steps

Create a managed disk from a VHD

Create a virtual machine from a managed disk

For more information on the Azure CLI, see Azure CLI documentation.

Additional virtual machine and managed disks CLI script samples can be found in the Azure Linux VM documentation.