en-US/add-secondary-storage.xml

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<section id="add-secondary-storage">
  <title>Adding Secondary Storage</title>
  <note>
    <para>Be sure there is nothing stored on the server. Adding the server to CloudStack will
      destroy any existing data.</para>
  </note>
  <para>When you create a new zone, the first secondary storage is added as part of that procedure.
    You can add secondary storage servers at any time to add more servers to an existing
    zone.</para>
  <orderedlist>
    <listitem>
      <para>If you are going to use Swift for cloud-wide secondary storage, you must add the Swift
        storage to &PRODUCT; before you add the local zone secondary storage servers.</para>
    </listitem>
    <listitem>
      <para>To prepare for local zone secondary storage, you should have created and mounted an NFS
        share during Management Server installation.</para>
    </listitem>
    <listitem>
      <para>Make sure you prepared the system VM template during Management Server
        installation.</para>
    </listitem>
    <listitem>
      <para>4. Now that the secondary storage server for per-zone storage is prepared, add it to
        &PRODUCT;. Secondary storage is added as part of the procedure for adding a new zone.</para>
    </listitem>
  </orderedlist>
</section>