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Detailed system requirements - storage of remote probes



Hello, I have a question regarding the following section:


Hardware Requirements for PRTG Server and Remote Probes

Hardware requirements for PRTG Core Service and Probe Service mainly depend on the sensor types and intervals used. The following values are provided as reference for common usage scenarios of PRTG (based on a default sensor interval of 60 seconds).

CPU A current PC or server with at least a dual core CPU can easily monitor up to 2,000 sensors (see sensor type specific notes below). PRTG supports native x86/x64 architectures. RAM Minimum requirement: 2048 MB RAM. You need about 150 KB of RAM per sensor. In general, we recommend at least 1 additional CPU core and 1 GB RAM per additional 1,000 sensors. Hard Disk Drive You need about 200 KB of disk space per sensor per day (for sensors with 60 second interval). Internet connection An internet connection is required for license activation (via HTTP or email). Stable network connection for remote probes Remote probes require a stable network connection between the PRTG core server and the remote probe. Unstable connections, for example via 3G, might work but it could be possible that you lose monitoring data if the connection is non-reliable.

There are also non-hardware dependent limitations for some sensor types, for example, WMI and SNMP V3 sensors. These limitations can be overcome by distributing the sensors across multiple remote probes. For clusters we recommend that you stay below 2,500 sensors per cluster.

icon-i-redIt is crucial for a properly working PRTG server to have a certain amount of hardware resources available. If the server runs out of resources, PRTG will send warning and emergency messages to the primary email address of the PRTG System Administrator user. You will receive warning messages if available disk space falls below 1 GB or memory below 500 MB, and emergency messages if available disk space or memory falls below 50 MB. Please react immediately and free up system resources!

Do the storage requirements for a core server also apply to the remote probes? When using remote probes do you need to take the number of sensors that remote probe might have into account for the storage? Does the 200 KB of disk size per day per sensor also apply to remote probes?

core-server remote-probe system-requirements

Created on Dec 14, 2018 2:08:13 PM

1 Reply



Dear Freek,

remote probes do not store historic data. The data is sent to the core server, where it is processed and stored.

Probes still create log files. Also, some data like syslog and trap messages are stored on the probe. (The data needed per sensor depends very much on how many syslog / trap messages are received.)

Created on Dec 14, 2018 2:19:40 PM by  Arne Seifert [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.