Snapshot an Azure VM Disk using PowerShell

30 minutes
  • 3 Learning Objectives

About this Hands-on Lab

Your company has a legal requirement to keep all backups for a period of time to ensure data can be restored if needed. Your manager has asked you to take a snapshot of a disk in Azure, and make sure that you can access it. Use PowerShell to take a snapshot of the VM disk and send it to a storage account.

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Stop the Virtual Machine
  1. Use the correct PowerShell command to stop and deallocate the VM that’s provisioned with this lab.

  2. In the Azure Portal, click All resources and copy the name of the pre-provisioned resource group.

    1. In the Cloud Shell, create a new variable:
      $rg = "<RESOURCE_GROUP_NAME>"
    2. In the Azure Portal, copy the name of the VM disk and create a new variable:
      $diskname = "<VIRTUAL_MACHINE_DISK_NAME>"
    3. Create a variable for sasExpiryDuration:
      $sasExpiryDuration = "3600"
    4. In the Azure Portal, copy the storage account name, and create a new variable:
      $storageAccountName = "<STORAGE_ACCOUNT_NAME>"
    5. In the Azure Portal, copy the storage account key for key1, and create a new variable:
      $storageAccountKey = "<KEY1_STORAGE_ACCOUNT_KEY>"
    6. Create additional variables:
      $storageContainerName = "container1"
      $destinationVHDFileName = "disk1.vhd"
      $useAzCopy = 1
      $vmName = "winVM"
    7. Stop the VM:
      Stop-AzVM -ResourceGroupName $rg -Name $vmName
Take a Snapshot of the VM
  1. Use the appropriate commands to take a snapshot of the VM.
    1. Once the VM has stopped, grant access to the disk:
      $sas = Grant-AzDiskAccess -ResourceGroupName $rg -DiskName $diskName -DurationInSecond $sasExpiryDuration -Access Read
  2. Create an Azure Storage context:
    $destinationContext = New-AzStorageContext -StorageAccountName $storageAccountName -StorageAccountKey $storageAccountKey
Copy the Snapshot to Container
  1. Using AzCopy, send the snapshot to the container1 within the storage account provisioned with this lab.
    1. Using AzCopy, send the snapshot to container1:
      
      if($useAzCopy -eq 1)
      {
      $containerSASURI = New-AzStorageContainerSASToken -Context $destinationContext -ExpiryTime(get-date).AddSeconds($sasExpiryDuration) -FullUri -Name $storageContainerName -Permission rw
      azcopy copy $sas.AccessSAS $containerSASURI

    }else{

    Start-AzStorageBlobCopy -AbsoluteUri $sas.AccessSAS -DestContainer $storageContainerName -DestContext $destinationContext -DestBlob $destinationVHDFileName
    }

Additional Resources

You have been given a VM and a destination storage account with this hands-on lab. Open a PowerShell prompt and shutdown the VM. Once the VM is deallocated, you can perform the necessary commands to take a snapshot of the disk and export it to container1 within the storage account provisioned for this lab.

Use the following code to copy the disk once you've created your variables:

if($useAzCopy -eq 1)
{
    $containerSASURI = New-AzStorageContainerSASToken -Context $destinationContext -ExpiryTime(get-date).AddSeconds($sasExpiryDuration) -FullUri -Name $storageContainerName -Permission rw
    azcopy copy $sas.AccessSAS $containerSASURI

}else{

    Start-AzStorageBlobCopy -AbsoluteUri $sas.AccessSAS -DestContainer $storageContainerName -DestContext $destinationContext -DestBlob $destinationVHDFileName
}
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