<%NUMBERING1%>.<%NUMBERING2%>.<%NUMBERING3%> PRTG Manual: WMI HDD Health Sensor
The WMI HDD Health sensor connects to the parent device via Windows Management Instrumentation (WMI) and monitors the health of integrated development environment (IDE) disk drives on the target system using Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.).
WMI HDD 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: WMI HDD Status
French: État du disque dur (WMI)
German: WMI Laufwerkszustand
Japanese: WMI HDD 正常性
Portuguese: Funcionamento do HDD (WMI)
Russian: Работоспособность жесткого диска WMI
Simplified Chinese: WMI 硬盘健康状况
Spanish: Salud HDD (WMI)
Remarks
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.
This sensor requires WoW64 (Windows 32-bit on Windows 64-bit) for target systems that run Windows Server 2016.
This sensor requires credentials for Windows systems in the settings of the parent device.
This sensor only supports IPv4.
This sensor has a medium performance impact.
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.
The items in the list in the Add Sensor dialog are specific to the parent device.
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.
If the name contains angle brackets (<>), PRTG replaces them with braces ({}) for security reasons. For more information, see the Knowledge Base: What security features does PRTG include?
This setting is for your information only. You cannot change it.
Tags
Enter one or more tags. Confirm each tag with the Spacebar key, a comma, or the Enter key. You can use tags to group objects and use tag-filtered views later on. Tags are not case-sensitive. Tags are automatically inherited.
It is not possible to enter tags with a leading plus (+) or minus (-) sign, nor tags with parentheses (()) or angle brackets (<>).
For performance reasons, it can take some minutes until you can filter for new tags that you added.
The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor:
smartsensor
Priority
Select a priority for the sensor. This setting determines the position of the sensor in lists. The highest priority is at the top of a list. Choose from the lowest priority () to the highest priority ().
S.M.A.R.T. Specific
S.M.A.R.T. Specific
Setting
Description
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.
Debug Options
Debug Options
Setting
Description
Result Handling
Define what PRTG does with the sensor result:
Discard result: 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.
Sensor Display
Sensor Display
Setting
Description
Primary Channel
Select a channel from the list to define it as the primary channel. In the device tree, the last value of the primary channel is always displayed 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 different channels are shown for this sensor:
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. All channels with this unit are stacked 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 Root Group Settings, section Scanning Interval.
Schedules, Dependencies, and Maintenance Window
You cannot interrupt the inheritance for schedules, dependencies, and maintenance windows. The corresponding settings from the parent objects are always active. However, you can define additional schedules, dependencies, and maintenance windows. They are active at the same time as the parent objects' settings.
Schedules, Dependencies, and Maintenance Window
For more information, see section Root Group Settings, section Schedules, Dependencies, and Maintenance Window.
Access Rights
Access Rights
For more information, see section Root Group Settings, section Access Rights.
Channel List
Which channels the sensor actually shows might depend on the target device, the available components, and the sensor setup.
The channel names indicate the ID of the S.M.A.R.T. attribute, followed by a colon, and the typical meaning of the channel. The sensor can also show other attributes that the target device returns, but some channels have the name Unknown Channel. This happens if PRTG cannot match the ID of a found attribute with an internally defined channel name.
Some vendors do not agree on attribute definitions and define meanings other than the common ones.
Every attribute of a disk assumes a value. PRTG shows these attributes as channels with their last, minimum, and maximum value. These channel values change over time and indicate the disk health. Higher values correspond to a better health. The disk's attributes come with a threshold, defined by the manufacturer of the drive. If a channel value is lower than this threshold, the sensor automatically shows the Warningstatus. This indicates that the S.M.A.R.T. status of the HDD might break soon.
For some attributes, there are no thresholds defined and because of this, they cannot be categorized for a status other than the Up status. You can define lookups and use them with affected channels to get the desired status for a return value.
Channel
Description
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