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Limitations of the number of sensors PRTG 8 can handle



Is there a maximum number of sensors PRTG 8 can handle? From customer experience, what is the highest number of sensors a company has in their PRTG 8 system? We are putting PRTG 8 in side by side performance comparison to the HP Openview system we already have in place. We want to retire Openview but need to be assured PRTG 8 can handle the number of devices and sensors.

limits prtg-8 sensor

Created on Nov 2, 2010 1:43:15 PM

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Accepted Answer




it is very hard to answer this question with a definitive "General Answer". It simply depends on too many factors, how much sensors a PRTG installation is able to "take":

  • The hardware on which PRTG runs on
  • The Windows on which PRTG runs (we recommend no Vista/2008 R1 if you want to use WMI Sensors in large scale, due to their weak WMI - Performance)
  • The Windows Versions monitored by PRTG (see the point above)
  • The Sensor types used and their settings (For example Ping and SNMP sensors are more likely to perform well in a mass-setup then WMI or EXE-Sensors), such as Scanning Intervals, Timeouts, but also for example SNMP Version on SNMP Sensors (SNMP v3 is much more stressing then SNMP v1)

We have a test-setup with a bit above 20,000 sensors in our lab, which runs fine on an 8-Core-CPU (the CPUs are almost idling) with 16GB of RAM. This system has almost only Ping and SNMP Sensors. You might also want to consider the usability of such a big setup, the time you spend with scrolling etc..

Best Regards.

Created on Nov 2, 2010 4:29:15 PM by  Torsten Lindner [Paessler Support]

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.