The LOADxx member specifies:
- Information about your I/O configuration.
- An alternate nucleus ID.
- The architecture level of the nucleus.
- The NUCLSTxx member that you use to add and delete modules from
the nucleus region at IPL-time.
- Information about the master catalog.
- Information about the parmlib concatenation.
- The name of the sysplex (systems complex) that a system is participating
in; it is also the substitution text for the &SYSPLEX system symbol.
- The IEASYMxx and IEASYSxx parmlib members that the system is to
use.
- Additional parmlib data sets that the system will use to IPL.
These data sets are concatenated ahead of SYS1.PARMLIB to make up
the parmlib concatenation.
- Filtering keywords so you can use a single LOADxx member to define
IPL parameters for multiple systems. The initial values of the filter
keywords (HWNAME, LPARNAME and VMUSERID) are set at IPL to match the
actual values of the system that is being IPLed. The LOADxx member
can be segmented by these keywords.
- Facilities that are not to be used at this
time because migration to another processor, z/OS® release, or both is underway.
The LOADxx member is selected through the use of the LOAD parameter
on the system control (SYSCTL) frame of the system console. For information
about specifying the LOAD parameter, see z/OS MVS System Commands.
If the operator does
not select a LOADxx member on the system console, the system uses
LOAD00.
Note: The system must have access to a LOADxx member.