Fieuw, after a few hours of searching and testen i’ve got it working! Cacti can now shows disk io of our windows 2008 servers! Here is how i did it: wmi-client libwmiclient1 download them and install at http://www.orvant.com/packages/(go to bottom) cacti wmi plugin, download the wmi.phpand put it in your cacti/scripts/ folder. Make sure the webserver you are running can read the file! http://svn.parkingdenied.com/CactiWMI/trunk/ cacti wmi templates