Step two: prepare one system

From one system in the SMS complex, issue the T SMS=xx command, where xx identifies IGDSMSxx as the SMS initialization control member of SYS1.PARMLIB. SMS uses the ACDS and COMMDS identified in IGDSMSxx to manage storage. Because the initial ACDS and COMMDS are empty, the system is activated with a null configuration. Keep in mind that a null configuration is only intended as a migration path.

For additional information, see z/OS MVS Initialization and Tuning Guide.

Requirement: All systems in the SMS complex must be running in the same mode. When an SMS control data set that supports only eight names is accessed for update on a system running in 32-name mode, you must convert the data set to a new, incompatible format in order to support 32 names. Confirm this conversion using the operator console or the ISMF. This conversion is permanent, so make copies of your control data sets before the system mode is converted.