Question on Sensors and License Numbers

Hi there,

The answer would be "500" then, though to be precise, when you install PRTG, by default there will be a "Probe Device" which represents the machine where PRTG is installed and it has three standard sensors that cannot be deleted (Core Health, Probe Health, System Health), so you have effectively 497 sensors left to use unless you pause those sensors, because manually paused sensors do not count against your license.

See also this video for more details.

Kind regards,

Erhard

oh ok..so basically sensor count is directly proportional to the the number of devices I want to monitor? The way I understood it was i could re-use the Ping sensor for a pool of devices. I guess that is wrong.

ok..seems i mis understood the concept of licensing around the sensors. From what you described it seems that license count will still be dependent on device count in my scenario. So each device will eat up once license space. the way I previously understood licensing was that the ping sensor would just cost as 1 license and you could apply it to a pool of devices.

Correct, it's not like "Add a ping sensor floating somewhere in the tree and then define there a range of targets to ping".

There is sort of an object hierarchy. You need a device to put sensors on. Most sensors will direct their query then to the device they were added to.

Device count as such is not really a deciding factor, what I mean is, in the end it doesn't matter whether you have 500 ping sensors spread over 500 devices or you monitor 100 devices and each with 5 different sensors on them. So the 500 sensors license is a good fit for small networks or when only aiming at monitoring certain devices in your network where 500 sensors could suffice. For everything else then there are those larger licenses.