+# When you have a @config.yml@ file that includes all volumes on all keepstores, it is important to add a 'Rendezvous' parameter to the InternalURLs entries to make sure the old volume identifiers line up with the new config. If you don't do this, @keep-balance@ will want to shuffle all the existing data around to match the new volume order. The 'Rendezvous' value should be the last 15 characters of the keepstore's UUID in the old configuration. Here's an example:
+
+<notextile>
+<pre><code>Clusters:
+ xxxxx:
+ Services:
+ Keepstore:
+ InternalURLs:
+ "http://keep1.xxxxx.arvadosapi.com:25107": {Rendezvous: "eim6eefaibesh3i"}
+ "http://keep2.xxxxx.arvadosapi.com:25107": {Rendezvous: "yequoodalai7ahg"}
+ "http://keep3.xxxxx.arvadosapi.com:25107": {Rendezvous: "eipheho6re1shou"}
+ "http://keep4.xxxxx.arvadosapi.com:25107": {Rendezvous: "ahk7chahthae3oo"}
+</code></pre>
+</notextile>
+
+In this example, the keepstore with the name `keep1` had the uuid `xxxxx-bi6l4-eim6eefaibesh3i` in the old configuration.