The Avg. Disk sec/Read (LogicalDisk\Avg. Disk sec/Read) for the logical disk has exceeded the threshold. The performance of applications that rely on this logical disk may be negatively impacted as the disk is taking an unusually long time to service read requests.
The Avg. Disk sec/Read counter indicates how fast data is being read on average for a specific logical disk.
A high Avg. Disk sec/Read performance counter value may occur due to a burst of disk read requests by either an operating system or application.
To view recent history for the Logical Disk\Avg. Disk sec/Read performance counter you can use the following view:
Start Logical Disk Avg. Disk Sec/Reads Performance View
To increase the available storage subsystem throughput for the logical disk, do one or more of the following:
Upgrade the controllers or disk drives.
Switch from just a bunch of disks (JBOD) to striped arrays.
Increase the number of actual spindles.
Be sure to set this threshold value appropriately for your specific storage hardware. The threshold value will vary according to the disk’s underlying storage subsystem. For example, the “disk” might be a single spindle or a large disk array.