<liclass="level1"><divclass="li"> Portal does not store any data outside the session database, so you can have many portal servers using the same HTTP host name</div>
<liclass="level1"><divclass="li"> All handlers download the whole configuration, so many servers can serve the same virtual hosts</div>
</li>
</ul>
<p>
You can for example set up a fail-over cluster with <ahref="http://www.linux-ha.org/wiki/Heartbeat"class="urlextern"title="http://www.linux-ha.org/wiki/Heartbeat"rel="nofollow">Heartbeat</a> and <ahref="http://haproxy.1wt.eu/"class="urlextern"title="http://haproxy.1wt.eu/"rel="nofollow">HAproxy</a>, like this: