In this video i will monitor your disk subsystem.

1. In the System Monitor window, click the Add button on the toolbar.
2. In the Add Counters dialog box, select the following performance objects and counters:
3. Select PhysicalDisk from the Performance Object drop-down list, select %Disk Time from the counter list box, and click the Add button.
4. Select PhysicalDisk from the Performance Object drop-down list, select Current Disk Queue Length from the counter list box, and click the Add button.
5. Select LogicalDisk from the Performance Object drop-down list, select %Idle Time from the counter list box, and click the Add button.
6. Click the Close button. You will see these counters added to your graph.