SQL Counter: Part 7 (Disk Write/sec)
PhysicalDisk Object -> Avg. Disk Sec/WriteThis counter measures the average time, in seconds, of a write of data to disk. If the average value increases over time, then it points to a potential write performance problem. Possible reasons can be that the load has increased over time, the device is running out of free space, or the ratio of read/write has changed.