Clicking the Task Throttling tab brings up the Task Throttling window. Task throttling lets you determine the priority of certain tasks.

The Task throttling tab is shown below.

Using task throttling causes an operation to insert pauses for the specified amount of time during I/O. These pauses help to reduce any interference that may occur with the I/O of other applications running on the system. By selecting the Throttle all tasks check box, you apply the time delay that is specified in the text field to all Storage Foundation tasks. To apply the time delay to individual tasks, uncheck the check box, enter the number of milliseconds in each task's text field, and click OK. Depending on your total system I/O activity, a time delay of 300 to 500 milliseconds may result in a favorable balance of I/O for Storage Foundation tasks and other applications. The Reset button restores default settings.