How to monitor Current Disk Queue Length for WMI Win32_PerfFormattedData_PerfDisk_PhysicalDisk ?

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_PerfFormattedData_PerfDisk_PhysicalDisk

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 Physical Disk performance object consists of counters that monitor hard or fixed disk drive on a computer. Disks are used to store file, program, and paging data and are read to retrieve these items, and written to record changes to them. The values of physical disk counters are sums of the values of the logical disks (or partitions) into which they are divided.

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