I’m wondering if it is possible in PRTG network monitor, to get notifications based on "unexpected behavior"? Not a trigger on a absolute number (volume or threshold), but depending on data from the past. When a sensor is steady increasing or decreasing in time, I want to know when the sensor data is deviating from its ‘line’. A change of angle of the graphic line.
Example: Free bytes of a disk are decreasing evenly but suddenly there is a change. Of course this could be made with a threshold trigger but the value must be adjusted for each case.
Is such an "unexpected behavior" notification already a part of PRTG?