# Dataset Group Data Collection dialog box

You use this dialog box to set the interval at which data collection occurs.

You access this dialog box through the Dataset Group Summary workspace, which is described in Monitoring dataset groups. The settings to modify are as follows:

- RMF interval. Data is collected at the predefined time interval of the resource measurement facility (RMF).
- On Demand. Data is collected when the user requests collection.
- nnn Mins (5 - 360). Data is collected at the interval of minutes that you define, where nnn is an integer from 5 to 360.

To learn more about configuring data set groups see the IBM® Tivoli OMEGAMON® XE for Storage on z/OS®: User's Guide.