title: Does downsizing an Azure VM result in data loss?
body: <p>I have a VM with an OS disk and a single Data disk, particulars below.</p>
  <ol>
  <li>If I <em><strong>downsize</strong></em> the VM will it affect any data on the OS or Data disk?</li>
  <li>Do I need to backup vm or disks as a precaution prior to downsizing?</li>
  </ol>
  <p>====================================================<br />
  <strong>VM</strong></p>
  <p>VM Size: D2s_v3</p>
  <p><strong>OS disk</strong></p>
  <p>Storage type: Premium SSD LRS<br />
  Size(GiB): 127<br />
  Max IOPS: 500<br />
  Max throughput: 100<br />
  Encryption SSE with PMK<br />
  Host caching Read/Write</p>
  <p><strong>Data disk</strong></p>
  <p>Storage type: Premium SSD LRS<br />
  Size(GiB):1023<br />
  Max IOPS:5000<br />
  Max throughput:200<br />
  Encryption SSE with PMK<br />
  Host caching Read-only</p>