How to monitor Current Disk Queue Length for WMI Win32_PerfRawData_PerfDisk_LogicalDisk ?

With IPHost Network Monitor you can run WMI Current Disk Queue Length monitoring of various devices in your network.

To create a WMI monitor for Current Disk Queue Length, provide host name (it must be a Windows host) and specify custom WQL query:

SELECT CurrentDiskQueueLength FROM Win32_PerfRawData_PerfDisk_LogicalDisk

Current Disk Queue Length is the number of requests outstanding on the disk at the time the performance data is collected. It also includes requests in service at the time of the collection. This is a instantaneous snapshot, not an average over the time interval. Multi-spindle disk devices can have multiple requests that are active at one time, but other concurrent requests are awaiting service. This counter might reflect a transitory high or low queue length, but if there is a sustained load on the disk drive, it is likely that this will be consistently high. Requests experience delays proportional to the length of this queue minus the number of spindles on the disks. For good performance, this difference should average less than two.

The Logical Disk performance object consists of counters that monitor logical partitions of a hard or fixed disk drives. Performance Monitor identifies logical disks by their a drive letter, such as C.

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