Starting the SMS address space

When you have completed preparations and are ready to start SMS, use the T SMS=xx command, where xx identifies IGDSMSxx as the SMS initialization member. The T SMS=xx command is an abbreviation for the SET SMS=xx command, discussed in Step two: prepare one system. To eliminate confusion with the SETSMS operator command, the abbreviated T SMS=xx form of the SET SMS=xx command is used throughout the remainder of this information.

When you have sufficiently tested your operations and are ready to have SMS automatically started at future IPLs, add the IGDSSIIN module name to the SMS entry.

Here are some examples of the SMS record:

The following SMS record defines SMS to z/OS® without starting SMS at IPLs:
```
SUBSYS SUBNAME(SMS)
```
The following SMS record defines SMS to z/OS and starts SMS at future IPLs:
```
SUBSYS SUBNAME(SMS) INITRTN(IGDSSIIN)
```
The system uses the default values of ID and PROMPT. IGDSMS00 specifies initialization information, and the operator has no control over the rest of SMS initialization.
The following SMS record allows the operator to modify SMS initialization:
```
SUBSYS SUBNAME(SMS) INITRTN(IGDSSIIN)
       INITPARM(',PROMPT=YES')
```
The system uses the default value of ID, which identifies IGDSMS00 as containing initialization information. The PROMPT parameter requests that SMS display IGDSMS00, so that the operator can modify the parameters in IGDSMS00.
The following SMS record initializes SMS using IGDSMS01:
```
SUBSYS SUBNAME(SMS) INITRTN(IGDSSIIN)
       INITPARM('ID=01,PROMPT=DISPLAY')
```
The PROMPT parameter requests that the contents of IGDSMS01 be displayed, but the operator cannot modify them.