Customizing z/OS UNIX

Before customizing z/OS UNIX, you must decide whether you want to set up kernel services in minimum mode or full function mode. If you want to use any z/OS UNIX service, TCP/IP, or other functions that require the kernel services, you must use full function mode; otherwise, you can use minimum mode.

Requirement: In order to apply service to the file system, you need at least one system that can run in full function mode.

SMS (System Managed Storage, which is part of the DFSMSdfp element of z/OS) must be configured, whether you define the kernel in minimum mode or full function mode.