en-US/primary-storage-outage-and-data-loss.xml

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<section id="primary-storage-outage-and-data-loss">
  <title>Primary Storage Outage and Data Loss</title>
  <para>When a primary storage outage occurs, all hosts in that cluster are rebooted. This ensures
    that affected VMs running on the hypervisor are appropriately marked as stopped. Guests that are
    marked for HA will be restarted as soon as practical when the primary storage comes back on
    line. With NFS, the hypervisor may allow the virtual machines to continue running depending on
    the nature of the issue. For example, an NFS hang will cause the guest VMs to be suspended until
    storage connectivity is restored. Primary storage is not designed to be backed up. Individual
    volumes in primary storage can be backed up using snapshots.</para>
  <note>
    <para>If there are multiple primary storage servers in a cluster and only one goes down, VMs
      using a healthy primary storage will also be affected, because all hosts are rebooted.</para>
  </note>
  <para/>
</section>