Upgrading from 2.2.2 to 3.0.1

Hello, Some upgrade questions. I am on CentOS 6.5 and I've built 3.0.1 packages using: http://confluence.diamond.ac.uk/display/PAAUTH/FreeRADIUS+specs+and+sources+... I am wondering if it is possible to upgrade 2.2.2 to 3.0.1 (using these rpm packages). Is the configuration (as is working in 2.2.2) compatible (with 3.0.1)? Is 3.0.1 acceptable/proposed for production servers? The server is currently being used for eduroam and macauth (with ldap backend). We are planning to use it for DHCP too. Thanks, Nick