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.
Prerequisites
Use the Bash environment in Azure Cloud Shell. For more information, see Quickstart for Bash in Azure Cloud Shell.
If you prefer to run CLI reference commands locally, install the Azure CLI. If you're running on Windows or macOS, consider running Azure CLI in a Docker container. For more information, see How to run the Azure CLI in a Docker container.
If you're using a local installation, sign in to the Azure CLI by using the az login command. To finish the authentication process, follow the steps displayed in your terminal. For other sign-in options, see Sign in with the Azure CLI.
When you're prompted, install the Azure CLI extension on first use. For more information about extensions, see Use extensions with the Azure CLI.
Run az version to find the version and dependent libraries that are installed. To upgrade to the latest version, run az upgrade.
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 subscriptionId with your Azure subscription ID.
If you don't have an Azure subscription, create an Azure free account before you begin.
subscription="subscriptionId" # Set Azure subscription ID 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
subscriptionId="<subscriptionId>"
#Provide the name of your resource group where snapshot is created
resourceGroupName=myResourceGroupName
#Provide the snapshot name
snapshotName=mySnapshotName
#Provide Shared Access Signature (SAS) expiry duration in seconds e.g. 3600.
#Know more about SAS here: https://docs.microsoft.com/azure/storage/storage-dotnet-shared-access-signature-part-1
sasExpiryDuration=3600
#Provide storage account name where you want to copy the snapshot.
storageAccountName=mystorageaccountname
#Name of the storage container where the downloaded snapshot will be stored
storageContainerName=mystoragecontainername
#Provide the key of the storage account where you want to copy snapshot.
storageAccountKey=mystorageaccountkey
#Provide the name of the VHD file to which snapshot will be copied.
destinationVHDFileName=myvhdfilename
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.