Disk utilization monitors free space on a volume and automatically enumerates available volumes to monitor on the asset.
On Windows assets, the methods for measuring disk utilization is WMI or Windows performance counters.
For WMI or Windows performance counters, a Windows user with permissions to read the registry on the monitored asset is required.
When using Windows performance counters, the service “Remote Registry” must be enabled and started on the monitored asset.
If a Windows share is monitored instead of a volume or a drive, then the Windows user associated with the asset will need network read access to the share name.
On Unix assets, KNM connects to a monitored asset using SSH2, issuing commands specific to the selected operating system. Ensure the user used for UNIX assets can issue required commands. df is the default command.
System type: All but Other/Unidentified
Category: Performance
Note: If you experience issues with this monitor type on Windows machines, try unchecking the Use WMI checkbox on the Advanced tab of the asset node.
Use Windows share - This option only displays for Windows system type assets.
If checked, the monitor uses the SMB/CIFS network protocol to obtain disk utilization. Doing so requires you to enter a share name, for example C$. Ensure that File and printer sharing is running on the asset when you enable this option. Enumeration of disks is not supported when this option is enabled.
If blank, the monitor uses the Windows performance registry to obtain disk utilization values.
Volume name - The name of the disk to monitor. The name is automatically obtained from the asset when doing an asset inspection. To refresh the list, press the Rescan disk volumes link. If the Use Windows share option is selected, a text field replaces the list.
Free disk space - Minimum space free on volume in the unit selected below.
Unit - Select the unit to use in the test. The Free disk space threshold is given in this unit.
Inherit credentials - Specifies the Windows domain credential, if one is required. If checked, inherited. If blank, overrides the Windows domain credential set for the asset on the Authentication tab of an asset node.
