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Is there a client to monitor machines while they are off the network?



We have machines that come on and off the network at times that we need to monitor. Is there some sort of client we can install so that stats are taken like normal and then the next time the device is on the network, it would check in with the PRTG server? Our goal is to monitor disk space on our laptops and to alert us when they drop below 10% free space. We were going to do this via scheduled task and a VB Script, but we were hoping that PRTG could possibly do it for us.


disk laptop laptops monitor off-network offline probe prtg remote-probe space

Created on Mar 26, 2010 8:51:32 PM

Last change on Mar 29, 2010 8:29:01 AM by  Daniel Zobel [Product Manager]

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Accepted Answer



This article applies to PRTG Network Monitor 7 or later

Monitoring Client Computers Offline Using Remote Probes

To monitor a computer that is not always connected to the network, you can install a Remote Probe on this machine. A remote probe monitors the local computer and (optionally) devices in a remote network. As soon as the computer running the remote probe is re-connected to the network, the probe connects to the PRTG core server and sends its monitoring data (see also video tutorial Core Server and Remote Probes).

However, there are some limitations that apply to remote probes:

  • A probe can only buffer a maximum of 500,000 sensor results in RAM memory (up to 50 - 200 MB). If there is more data, the probe stops collecting data.
  • If the probe (or the computer the probe is running on) is restarted before it can connect to the core server, all buffered data is lost.
  • Notifications can only be sent by the core server, not by the probe itself.

Alternative: Use a Freeware Edition

Using remote probes, the monitoring data that was collected while the client was offline, is later integrated into your PRTG's core server monitoring data. If this is not important to you and, due to the limitations, using remote probes is not an option for you, please consider installing a freeware version of PRTG on the client computer.

The Freeware Edition of PRTG supports up to 10 sensors. This can be sufficient for monitoring local disk space, for example. Please note: With this configuration, the client runs its own PRTG core server. You have to configure notifications, such as via email or SMS, for every single core server installation.

See also

Created on Mar 29, 2010 8:28:46 AM by  Daniel Zobel [Product Manager]

Last change on Jun 26, 2012 3:43:17 PM by  Daniel Zobel [Product Manager]

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.