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

Windows version

• This sensor requires at least Windows 7 on the target system that holds the hard disk drives you want to monitor. The sensor might not work reliably if the target system runs on Windows 2003, Windows XP, or Windows Vista. Because of a known bug in those systems, the sensor might not detect available hard disk drives.

WoW64

• This sensor requires WoW64 (Windows 32-bit on Windows 64-bit) for target systems that run Windows Server 2016.

Credentials

• This sensor requires credentials for Windows systems.

IPv4

• This sensor only supports IPv4.

Performance impact

• This sensor has a medium performance impact.

Sensor values

• The values that this sensor shows can vary depending on how a vendor handles S.M.A.R.T. values. See the respective vendor's documentation for more information.

Add Sensor dialog

• The items in the list in the Add Sensor dialog are specific to the parent device.

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.

Serial Number

The serial number of the disk that this sensor monitors.

Size (GB)

The size of the disk that this sensor monitors.

Name

The name of the disk that this sensor monitors.

Timeout (Sec.)

Enter a timeout in seconds for the request. Enter an integer. The maximum timeout value is 900 seconds (15 minutes).

If the reply takes longer than this value, the sensor cancels the request and shows a corresponding error message.

Result Handling

Define what PRTG does with the sensor result:

• Discard result (default): Do not store the sensor result.

• Store result: Store the last sensor result in the \Logs\sensors subfolder of the PRTG data directory on the probe system. The file name is Result of Sensor [ID].Data.txt. This setting is for debugging purposes. PRTG overwrites this file with each scanning interval.

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

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.

Average Erase Count And Maximum Erase Count

The average erase count and the maximum erase count

Command Timeout

The command timeout count

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

Erase Fail Count

The erase fail count

G-Sense Error Rate

The G-sense error rate count

Hardware ECC Recovered

The hardware ECC recovered count

Power Cycle Count

The power cycle count

Power Loss Protection Failure

The power loss protection failure count

Power-On Hours

The power-on hours count

Program Fail Count Total

The program fail count total

Read Error Rate

The read error rate count

This channel is the primary channel by default.

Read Error Retry Rate

The read error retry rate count

Reallocated Sectors Count

The reallocated sectors count

Reported Uncorrectable Errors

The reported uncorrectable errors count

SATA Downshift Error Count

The SATA downshift error count

Soft ECC Correction

The soft ECC correction count

Soft Read Error Rate

The soft read error rate count

SSD Erase Fail Count

The SSD erase fail count

SSD Life Left

The SSD life left count

SSD Program Fail Count

The SSD program fail count

Unexpected Power Loss Count

The unexpected power loss count

Unknown Channel

PRTG cannot match the ID of a found attribute with an internally defined channel name

Unused Reserved Block Count Total

The total unused reserved block count

Used Reserved Block Count Total

The total used reserved block count

Temperature Celsius

The temperature

Total LBAs Read

The total LBAs read

Total LBAs Written

The total LBAs written

Wear Range Delta

The wear range delta