Chapter 5. Central processor complex channel subsystem

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Central processor complex channel subsystem

This chapter describes the concepts of the z14 channel subsystem, including multiple channel subsystems and multiple subchannel sets. It also describes the technology, terminology, and implementation aspects of the channel subsystem.

This chapter includes the following topics:

•5.1, “Channel subsystem” on page 194

•5.2, “I/O configuration management” on page 202

•5.3, “Channel subsystem summary” on page 203

5.1 Channel subsystem

Channel subsystem (CSS) is a collective name of facilities that Z servers ...

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