docs/en-US/vm-storage-migration.xml

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<section id="vm-storage-migration">
  <title>VM Storage Migration</title>
  <para>Supported in XenServer, KVM, and VMware.</para>
  <note>
    <para>This procedure is different from moving disk volumes from one VM to another. See Detaching
      and Moving Volumes <xref linkend="detach-move-volumes"/>.</para>
  </note>
  <para>You can migrate a virtual machine’s root disk volume or any additional data disk volume from
    one storage pool to another in the same zone.</para>
  <para>You can use the storage migration feature to achieve some commonly desired administration
    goals, such as balancing the load on storage pools and increasing the reliability of virtual
    machines by moving them away from any storage pool that is experiencing issues.</para>
  <xi:include href="migrate-datadisk-volume-new-storage-pool.xml"
    xmlns:xi="http://www.w3.org/2001/XInclude"/>
  <xi:include href="migrate-vm-rootvolume-volume-new-storage-pool.xml"
    xmlns:xi="http://www.w3.org/2001/XInclude"/>
</section>