Abstract for Hardware Configuration Definition User's Guide

This document explains how to use Hardware Configuration Definition (HCD) to accomplish the following:
  • Define new hardware configurations
  • Modify existing hardware configurations
  • View existing hardware configurations
  • Activate configurations
  • Query supported hardware
  • Maintain IODFs
  • Compare two IODFs
  • Compare an IODF with an actual configuration
  • Print reports of configurations
  • Create graphical reports of a configuration
  • Migrate existing configuration data


Unless otherwise noted, the term MVS as used in this document refers collectively to the older MVS operating system as well as to its successors OS/390 and z/OS, in which MVS is one of the basic components. For purposes of this document, MVS used alone and without reference to a specific release is to be understood as the generic operating system type supported by HCD.

Who should read this information: This document is for the person who is responsible for defining the hardware configuration for a z/OS system. It is assumed that:
  • The person has a basic knowledge of z/OS, and hardware configuration.
  • Configuration planning has been completed before HCD is used to enter definition data. For information on configuration planning, refer to z/OS HCD Planning.

For the person responsible for problem determination, this document also explains what to do if a problem arises with HCD.

This information is for system programmers and system operators.

Related information 

Please see the z/OS Information Roadmap for an overview of the documentation associated with z/OS.