As you grow more familiar and comfortable with BRMS, you may decide to create additional control groups or to split larger control groups into smaller ones. This section provides information about the uses and benefits of a multiple control group operation in several different environments. Each scenario assumes a daily backup schedule.
Use multiple control groups to save applications or subsets of applications, and user libraries or subsets of user libraries. A backup strategy that uses multiple control groups can shorten your save window, and make the restore of selected data easier. In Scenario 1, you learn the benefits of using your own control groups rather than BRMS-configured ones such as *ALLUSR. In Scenario 2, you learn how to shorten your save window still further by processing multiple control groups through concurrent and parallel backups. In Scenario 3, you learn how process a network backup by using shared devices. Scenario 4 shows how you might optimize serial and parallel operations to save your entire system within a single backup control group.