On the JRE of each Device Manager - Storage Navigator management client, Java log file trace and logging must be enabled and caching must be disabled. The Java log file can help you troubleshoot a problem when an application error occurs in the Device Manager - Storage Navigator web client. Disabling the caching feature can help prevent complications when the software is updated. See the http://java.sun.com website for more information on configuring JRE through the Java Control Panel.