Detailed System Requirements

Operating Systems for PRTG Core Server and PRTG Probe

The 32-bit and 64-bit versions of the following operating systems are officially supported for PRTG "Core Service" and "Probe Service":

  • Microsoft Windows XP
  • Microsoft Windows Vista
  • Microsoft Windows 7
  • Microsoft Windows Server 2003
  • Microsoft Windows Server 2008
  • Microsoft Windows Server 2008 R2

Hardware Requirements for PRTG Core Server and PRTG Probe

Hardware requirements mainly depend on the sensor types and intervals used. The following values are provided as reference for common usage scenarios of PRTG 7 (based on a default sensor interval of 60 seconds).

  • CPU: An average PC built in 2008 can easily monitor 1,000 sensors (see sensor type specific notes below).
  • RAM: You will need about 150KB of RAM per sensor.
  • Hard Disk: You will need about 200KB of disk space per sensor per day (for sensors with 60 second interval).
  • An Internet connection is required for license activation (via HTTP or email).

There are also non-hardware dependent limitations for some sensor types, e.g. WMI and SNMP V3 sensors. These limitations can be overcome by distributing the sensors across multiple remote probes. If you plan installations with more than 500-1,000 sensors or more than 10 packet sniffing/xFlow (NetFlow/sFlow) sensors please consult the PRTG Site Planner tool ("Help" menu).

Sample Configurations:

  • Very large installation: PRTG runs with 30,000 SNMP sensors on a Dual-CPU Quad-Core system (Dell 2900 III, 16 GB RAM, Windows 2003 64-Bit). This scenario requires about 3 GB of RAM for the PRTG processes, the CPUs are running at 20 % load and it creates  about 1.5 TB of data on the disk for one year. An installation of this size is able to monitor 625 SNMP-enabled switches with 48 ports each.
  • Netbook installation: On a netbook (DELL Inspirion Mini 10, Intel Atom Z520, 1 GB RAM, Windows XP) PRTG can monitor a network with 80 devices and 1,500 sensors (600 SNMP sensors, 750 WMI sensors) with 5 minute sensor interval (average CPU load 35 %).

Running PRTG on Virtual Machines

PRTG Core Server as well as PRTG Probe can be run on virtualized platforms. The following platforms were tested successfully:


Client OS

VMware ESX/ESXi (version 3.5 and VSphere 4)

Windows XP, Windows 2003 (32/64 bit), Windows Vista, Windows 7 (32/64 bit), Windows 2008 (32/64 bit)

VMware Server 2.0

Windows XP, Windows 2003 (32/64 bit), Windows 2008

XEN Server 5.0

Windows XP

Parallels Virtuozzo Containers

Windows 2003 Server (32/64 bit)

Cloud Platforms (Amazon EC2, GoGrid, SoftLayer)

Windows Server 2003

Web Browser Requirements

The following browsers are officially supported for the PRTG web interface (in order of performance and reliability):

  • Google Chrome 3 (recommended)
  • Mozilla Firefox 3.5
  • Apple Safari 4
  • Microsoft Internet Explorer 8
  • Note: Microsoft Internet Explorer 7 is "deprecated" and may not be supported in future versions of PRTG.

A note on browser performance: PRTG's web interface makes heavy use of Javascript and AJAX. We found that for some functions Chrome and Safari are up to 10 times faster than Internet Explorer 8 and 3 - 5 times faster than Firefox 3.5.

Requirements for Monitored Devices

  • SNMP monitoring: The monitored device(s) must be equipped with SNMP Version 1, 2c or 3 (i.e. a SNMP-compatible software must be installed on the device). SNMP must be enabled on the device and the machine running PRTG must be allowed access to the SNMP interface.
  • WMI monitoring: In order to use WMI (Windows Management Instrumentation) monitoring you will need a Windows network. For client PCs monitored with WMI only Windows XP and later are officially supported (XP, 2003, Vista, 2008, etc.). Windows 2000 is not officially supported
  • NetFlow, sFlow monitoring: The device must be configured to send NetFlow data packets (NetFlow Version 5 or 9) or sFlow packets to the machine running a PRTG Probe.
  • Packet Sniffing: Only data packets passing the local machine's network card can be analyzed. Switches with so-called "monitoring ports" are necessary for network-wide monitoring in switched networks.

Requirements for the Windows GUI

The optional PRTG Windows GUI runs under all Windows versions XP or later and requires Internet Explorer 7 or 8.

Requirements for the iPhone-based User Interfaces

The optional iPRTG app for iPhones (must be purchased separately) requires iPhone firmware 3.0 (or later). The built-in web-browser based iPhone interface was created for iPhone firmware 2.0 (or later).

Planing an Installation With Hundreds of Sensors or More?

As a rule of thumb an average PC/server built in the year 2007 or later should be able to monitor 1,000 sensors with ease (some exceptions for SNMP V3, WMI and packet sniffing apply). For larger installations please refer to our knowledge base article "Planning Large Installations of PRTG Network Monitor 7":


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