Subsystems
A subsystem is a single, predefined operating environment through which the system coordinates work flow and resource usage.
i5/OS can contain several independent operating subsystems. The run-time characteristics of a subsystem are defined in the subsystem description.
IBM supplies
several subsystem descriptions that can be used with or without modification:
- QINTER
- Used for interactive jobs
- QBATCH
- Used for batch jobs
- QBASE
- Used for both interactive and communications batch jobs
- QCMN
- Used for communications batch jobs
- QSERVER
- Used for file server system
- QSYSWRK
- Used for general system work
- QUSRWRK
- Used to run TCP/IP server jobs that do work on behalf of a specific user.
You can also define a new subsystem using the Create Subsystem Description (CRTSBSD) command.