This chapter introduces the connectivity options available on IBM z SystemsTM platforms. It covers the following topics:
•I/O cages, I/O drawers, and PCI Express (PCIe) I/O drawers
•Supported channel types
The input/output architecture, implementation, and system-relevant rules for z Systems platforms are described in detail in subsequent chapters.
Book focus: Channels have been a standard component of all IBM z Systems platforms: IBM S/360, IBM System/370 (S/370), ...