<div class="docbook"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">4.3. Virtualhost Nodes</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="Java-Broker-Concepts-Broker.html">Prev</a> </td><th width="60%" align="center">Chapter 4. Concepts</th><td width="20%" align="right"> <a accesskey="n" href="Java-Broker-Concepts-RemoteReplicationNodes.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="Java-Broker-Concepts-Virtualhost-Nodes"></a>4.3. Virtualhost Nodes</h2></div></div></div><p>A <span class="emphasis"><em>virtualhost node</em></span> is a container for the virtualhost. It has exactly
    one virtualhost.</p><p>A <span class="emphasis"><em>virtualhost node</em></span> is backed by storage. This storage is used to record
    the durable entities that exist beneath the virtualhost node (the virtualhost, queues, exchanges
    etc).</p><p>When HA is in use, it is the virtualhost nodes of many Brokers that come together to form
    the group. The virtualhost nodes together elect a master. When the high availability feature is
    in use, the virtualhost node has <a class="link" href="Java-Broker-Concepts-RemoteReplicationNodes.html" title="4.4. Remote Replication Nodes">remote replications nodes</a>. There is a remote replication node corresponding to each
    remote virtualhost node that form part of the group.</p><p>
    <span class="emphasis"><em>Virtualhost node</em></span> also provides an initial configuration for its <span class="emphasis"><em>virtualhost</em></span>.
    How to specify initial configuration for <span class="emphasis"><em>virtual host</em></span> is described at
    <a class="xref" href="Java-Broker-Virtual-Host-Initial-Configuration.html" title="5.8. Virtualhost Initial Configuration">Section 5.8, “Virtualhost Initial Configuration”</a>.
  </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="Java-Broker-Concepts-Broker.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="Java-Broker-Concepts.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="Java-Broker-Concepts-RemoteReplicationNodes.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">4.2. Broker </td><td width="20%" align="center"><a accesskey="h" href="Apache-Qpid-Broker-J-Book.html">Home</a></td><td width="40%" align="right" valign="top"> 4.4. Remote Replication Nodes</td></tr></table></div></div>