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| Resource model distribution |
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This resource model should be distributed to Windows endpoints. |
The Physical Disk resource model detects bottlenecks specifically associated with all physical disks that are configured on the system. This model highlights the following problems:
Bytes transferred per second indicates the raw amount of data that is transferred through the disk. The maximum bytes per second a disk subsystem can handle depends on the type of hard drive, the type of controller, the drive configuration, and, in the case of most IDE-based hard drives, the speed of the CPU. Bytes transferred per second can be a good indicator of whether or not too much data is being pushed through the disk.
Another indicator that a disk is being over worked or is causing a bottleneck is the percentage usage of the disk. This particular threshold often needs to be altered when monitoring file servers for bottlenecks.
File servers, along with print and mail servers, can expect the percentage usage to be consistently high and are generally expected to show high use. However, in the case of workstations, these machines should typically see high percentage usage of disks in short bursts.
Workstations experiencing high disk usage will often see declining performance in CPU speed and general system response. In these situations, a high percentage usage of the disk is generating a bottleneck.