![](/api/v2/epubs/9780738457208/files/images/5444ch_CSS_overview.06.1.01.jpg)
![](/api/v2/epubs/9780738457208/files/images/5444ch_CSS_overview.06.1.02.jpg)
Channel subsystem overview
This chapter describes the channel subsystem (CSS), which handles all the system input/output (I/O) operations for IBM Z platforms. The role of the CSS is to control communication between internal or external channels and control units and devices.
This chapter includes the following sections:
2.1 CSS description
CSS enables communication from system memory to peripherals by using channel connections. The channels in the CSS allow transfer ...
Get IBM Z Connectivity Handbook now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.