OSA-Express

This topic provides an overview of OSA-Express for z/OS® Communications Server. An OSA is an integrated IBM Z® hardware feature that combines the functions of an IBM Z I/O channel with the functions of a network port to provide direct connectivity between IBM Z applications and their clients on the attached network.

For additional information about planning for and installing OSA-Express, see either the OSA-Express customer's guide and reference in your hardware library or the https://www.ibm.com/docs/en/zos/2.3.0?topic=osa-z-systems-express-customers-guide-reference.