WMI Logical Disk I/O v2 Sensor

Credentials

This sensor requires credentials for Windows systems.

WSMan

This sensor requires that the parent probe uses WSMan for WMI connections.

Access rights

We recommend that you use a local administrator account on the target system. Otherwise, the sensor might not return data for all disk volumes.

If you do not use a local administrator account, the following conditions apply:

• The user account must be a member of the Remote Management Users group on the target system.

• The user account must have the following permissions for the WMI namespace CIMv2 and its sub-namespaces on the target system: Enable Account and Remote Enable.

Windows Compatibility Options

This sensor uses only WSMan Port and Connection Security from the Windows Compatibility Options.

Hosted probe

You cannot add this sensor to the hosted probe of a PRTG Hosted Monitor instance. If you want to use this sensor, add it to a remote probe device.

IPv6

This sensor supports IPv6.

Performance impact

This sensor has a low performance impact.

Knowledge Base

For more information on how to set up the necessary access rights, see the Knowledge Base: How can I use a non-administrator Windows account for WMI monitoring via the WSMan protocol?.

Disk

The name of the disk that this sensor monitors.

If you want to monitor the combined values for all logical disks on the target system, select _Total.

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.

Avg. Bytes Per Read

The average number of bytes per read

Avg. Bytes Per Transfer

The average number of bytes per transfer

Avg. Bytes Per Write

The average number of bytes per write

Avg. Queue Length

The average number of items in the queue

Avg. Read Queue

The average number of items in the read queue

Avg. Read Time

The average read time

Avg. Transfer Time

The average transfer time

Avg. Write Queue

The average number of items in the write queue

Avg. Write Time

The average write time

Current Queue

The current number of items in the queue

Disk IOs

The number of disk I/O operations

Disk Read

The disk read speed

Disk Read IOs

The number of disk read I/O operations

Disk Read Time %

The disk read time (%)

Disk Time %

The disk time (%)

Disk Transfer

The disk transfer speed

Disk Write

The disk write speed

Disk Write IOs

The number of disk write I/O operations

Disk Write Time %

The disk write time (%)

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.

Free Space

The free space

Free Space %

The free space (%)

This channel is the primary channel by default.

Idle Time %

The idle time (%)

Split IOs

The number of split I/O operations