<%NUMBERING1%>.<%NUMBERING2%>.<%NUMBERING3%> PRTG Manual: System Health Sensor

The System Health sensor monitors the status of the probe system. It checks various system parameters that can affect the quality of the monitoring results.

PRTG automatically creates this sensor. You cannot delete the sensor if it was created automatically. If you manually create the sensor, you can delete it.

System Health Sensor

For a detailed list and descriptions of the channels that this sensor can show, see section Channel List.

Sensor in Other Languages

Dutch: Systeemstatus
French: État du système
German: Systemzustand
Japanese: システム正常性
Portuguese: Saúde do sistema
Russian: Работоспособность системы
Simplified Chinese: 系统健康状况
Spanish: Salud de sistema

Remarks

Consider the following remarks and requirements for this sensor:

Remark	Description
Performance impact	This sensor has a very low performance impact.
Limits	This sensor has predefined limits for several metrics.

Basic Sensor Settings

The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor:

systemhealthsensor

For more information about basic sensor settings, see section Sensor Settings.

Sensor Display

Setting	Description
Primary Channel	Select a channel from the list to define it as the primary channel. In the device tree, PRTG displays the last value of the primary channel below the sensor's name. The available options depend on what channels are available for this sensor. You can set a different primary channel later by clicking below a channel gauge on the sensor's Overview tab.
Graph Type	Define how this sensor shows different channels: Show channels independently (default): Show a graph for each channel. Stack channels on top of each other: Stack channels on top of each other to create a multi-channel graph. This generates a graph that visualizes the different components of your total traffic. You cannot use this option in combination with manual Vertical Axis Scaling (available in the channel settings).
Stack Unit	This setting is only visible if you select Stack channels on top of each other above. Select a unit from the list. PRTG stacks all channels with this unit on top of each other. By default, you cannot exclude single channels from stacking if they use the selected unit. However, there is an advanced procedure to do so.

Setting

Description

Primary Channel

Select a channel from the list to define it as the primary channel. In the device tree, PRTG displays the last value of the primary channel below the sensor's name. The available options depend on what channels are available for this sensor.

You can set a different primary channel later by clicking below a channel gauge on the sensor's Overview tab.

Graph Type

Define how this sensor shows different channels:

Show channels independently (default): Show a graph for each channel.
Stack channels on top of each other: Stack channels on top of each other to create a multi-channel graph. This generates a graph that visualizes the different components of your total traffic.
You cannot use this option in combination with manual Vertical Axis Scaling (available in the channel settings).

Stack Unit

This setting is only visible if you select Stack channels on top of each other above.

Select a unit from the list. PRTG stacks all channels with this unit on top of each other. By default, you cannot exclude single channels from stacking if they use the selected unit. However, there is an advanced procedure to do so.

Inherited Settings

By default, all of these settings are inherited from objects that are higher in the hierarchy. We recommend that you change them centrally in the root group settings if necessary. To change a setting for this object only, click under the corresponding setting name to disable the inheritance and to display its options.

For more information, see section Inheritance of Settings.

Channel List

Which channels the sensor actually shows might depend on the target device, the available components, and the sensor setup.

Channel	Description
Available Memory	The amount of free memory available on the system. This value should not fall below 500 MB. This way, PRTG can still request resources during report generation or auto-discoveries, for example.
Available Memory %	The available memory (%)
System CPU Load	The CPU load (%). Extensive CPU load can lead to false, incomplete, and incorrect monitoring results. This value should usually stay below 50%. This channel has default limits: Upper error limit: 90% Upper warning limit: 50%
Downtime	In the channel table on the Overview tab, this channel never shows any values. PRTG uses this channel in graphs and reports to show the amount of time in which the sensor was in the Down status.
Health	The sum of the system status as a value between 100% (healthy) and 0% (failing). Investigate frequent or repeated health values below 100%. This channel is the primary channel by default.

KNOWLEDGE BASE

What security features does PRTG include?

https://kb.paessler.com/en/topic/61108