PRTG Manual: Redfish Fan Status Sensor

Credentials

This sensor requires credentials for Redfish in settings that are higher in the object hierarchy.

Meta-scan

This sensor uses the meta-scan feature. After sensor creation, some settings might appear for reference purposes only.

IPv6

This sensor supports IPv6.

Performance impact

This sensor has a low performance impact.

Lookups

This sensor uses lookups to determine the status values of one or more channels.

Limits

This sensor has predefined limits for one or several metrics.

Redfish support

Supporters of the Redfish standard include Dell, Eaton, Emerson, Fujitsu, HPE, Intel, Lenovo, NetApp, Supermicro, and VMware.

Chassis

The chassis that this sensor monitors.

Physical Context

Shows the physical context of the fans that this sensor monitors. For example, Backplane or SystemBoard.

Fans

Shows the names of the fans that this sensor monitors.

The sensor reads the fan names from the device.

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.

Result Handling

Define what PRTG does with the sensor result:

• Discard result (default): Do not store the sensor result.
• Store result: Store the sensor result and the last response in the \Logs\sensors subfolder of the PRTG data directory on the probe system. The file name is Result of Sensor [ID].log. This setting is for debugging purposes. PRTG overwrites this file with each scanning interval.

This option is not available when the sensor runs on the hosted probe of a PRTG Hosted Monitor instance.

In a cluster, PRTG stores the result in the PRTG data directory of the master node.

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.

[Fan name] Speed

The fan speed in RPM or percent, depending on the type of data that the device provides

This channel only appears if the device reports fan speed data.

The sensor creates channel limits based on the configuration of the device during sensor creation:

• Lower error limit: The Redfish LowerThresholdCritical value.
• Upper error limit: The Redfish UpperThresholdCritical value.

The channel limits do not update automatically if the device configuration changes. You can update them at any time after sensor creation.

[Fan name] Status

The fan status

• Up status: OK
• Warning status: Warning
• Down status: Critical
• Unknown status: Offline / Absent

Overall Status

The health status of all fans

This channel shows the worst state reported across all fans in the chassis.

• Up status: OK
• Warning status: Warning
• Down status: Critical
• Unknown status: Offline / Absent

This channel is the primary channel by default.