IBM System z Connectivity Handbook

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Introducing connectivity

This chapter introduces the connectivity options available on the IBM zEnterprise EC12 and System z families of servers. The following topics are briefly discussed:

•Connectivity support

•Channel subsystem (CSS)

•I/O cages, I/O drawers, and PCIe I/O drawers

•Supported channel types

The input/output architecture, implementation, and system-relevant rules for zEC12 and System z servers are described in detail in subsequent chapters.

1.1 Overview

Input/output (I/O) channels¹ are components of the zEC12 and System z CSS and ...

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