For the past few years, I have worked with many technologies involved in collecting and displaying statistical information for the ITS department at the University of Hawaii at Manoa. I began by using Cacti and building an integrated system with a custom front-end using uPortal. After using it for several years, however, we began using Zabbix as a replacement. Zabbix is a much more user-friendly system that has all of the capability of Cacti, as well as additional features.
The transition from Cacti to Zabbix was not simple, so I developed a set of scripts to convert data. I posted this work here. Hopefully my work will help more people smoothly transition from Cacti to the more advanced Zabbix.