Only one SCDS can be activated at any time. Activating another SCDS or reactivating the current SCDS while OAM is running might cause OAM to restart. During this reinitialization, all libraries and drives are set to either online or offline according to the attributes defined in the SCDS that caused OAM to restart. After the restart completes, all libraries and drives should be displayed and set to the desired operational status.