iSeries Subsystems

System-supplied i5/OS™ subsystems are used to control jobs and functions.

A subsystem description defines how, where, and how much work enters a subsystem, and which resources the subsystem uses to do the work.

Autostart jobs perform one-time initialization or do repetitive work that is associated with a particular subsystem. The autostart jobs associated with a particular subsystem are automatically started each time the subsystem is started.

• Subsystems used for server Jobs
  The server jobs are configured to run in different subsystems, depending on their function.

• Use of autostart jobs
  Autostart jobs are associated with iSeries host servers.

• Use of prestart jobs
  A prestart job is a batch job that starts running before a program on a remote system initiates communications with the iSeries host server.

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Related concepts
Identify and display iSeries server jobs Use the iSeries character-based interface to display server job