The SMS parameter in IEASYSxx identifies the IGDSMSxx member from
which the storage management subsystem (SMS) will obtain its options
when the system is initialized for partitioned data set extended (PDSE)
support, as follows:
- SMS {xx}
- The two alphanumeric characters, xx,
are appended to IGDSMS to name the member. The nucleus initialization
program (NIP) saves the name until SMS is initialized. If initialization
of the PDSE fails, the IGDSMSxx PARMLIB
member is selected from the IEFSSNxx PARMLIB
member, using the ID=xx keyword.