The sensor goes in warning state for a couple of seconds after the device which the sensor is created on is rebooted. I've to recreate the sensor again and then it works fine. The device is a standard Windows server. THe sensor is a wmi volume type sensor. Could this be a bug or something?

Cheers R.

Article Comments

Please try to go the sensor settings. Under "WMI Volume Specific", set the ID Selection to "Use Drive Letter". Windows tends to change the GUID of drives, which makes the used WMI class of the sensor obsolete.


Dec, 2014 - Permalink

Thanks, this sounds good te me!

Cheers R.


Dec, 2014 - Permalink

Unfortunately the issue still occurs even with the change of the sensor setting to "Use Drive Letter" We allready updated to 14.4.12.3510


Jan, 2015 - Permalink

Hm that's weird. Could you try using the SNMP Disk Free sensor and check if this one works better for you? In general, it's recommended to choose SNMP over WMI for performance reasons and quirks like the one you're experiencing :)


Jan, 2015 - Permalink