Since a few days our PRTG Server PRTG drive grows very fast.

  1. How can i see which sensor uses most disk space?
  2. Or which file groth most the last days?
  3. D:\prtg\Paessler\PRTG Network Monitor\Logs\corecore.log is about 50GB, can i remove it to a backup folder as described here (or are they talking about an other log?) https://helpdesk.paessler.com/en/support/solutions/articles/60031-core-server-log-vliewer

Thanks a lot Maria

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Attention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.

Hi there,

The logs files should role automatically. In this way the size of the log files should be limited. You can backup / delete the Core.log file without an issue. If the file is missing, PRTG simply starts to create a new one.


Apr, 2023 - Permalink

Hi Moritz Thanks a lot for your information. So we will move the core.log to a backupfolder and see what happens. Is there any posibility to find out who and when a sensor was added or the settings of a sensor were ajusted? Thanks a lot


Apr, 2023 - Permalink

Hi Maria,

Yes, these information are located in the "History" tab of the Sensor in the PRTG UI.


Apr, 2023 - Permalink