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Chapter 1. Introduction > Hardware Configuration Manager (HCM) and benefits - Pg. 7

Extensive online help and prompting facilities are offered with HCD. Help is available for panels within HCD, commands, displayed data, actions, and input fields. In addition to the interactive interface offered with HCD, several batch utilities can be used to help with certain operations: Migrate your existing configuration data. Maintain the IODF. Generate an exported IODF. Print configuration reports. Use configuration packages as a subset of Master IODF. With HCD you can define both z/OS and z/VM® configuration types from z/OS and exchange IODFs between z/OS HCD and z/VM HCD. HCD provides search and update capabilities for IODF data through an LDAP interface. 1.3 Hardware Configuration Manager (HCM) and benefits The z/OS and z/VM HCM is a PC-based client/server interface to HCD that combines the logical and physical aspects of hardware configuration management. You can manage the logical connections with HCM and manage the physical aspects of the configuration. You can effectively manage the flexibility offered by the IBM FICON® infrastructure (cabinet, cabling). All updates to your configuration are done through HCM's intuitive graphical user interface. An important point (because of the client/server relationship with HCD) is that all changes of the logical I/O configuration are written into the IODF and fully validated and checked for accuracy and completeness by HCD, thus avoiding unplanned system outages because of incorrect definitions. For z/OS only, HCM allows the display of operational data such as system status information and operates on the switch through an interface to the I/O operations function of IBM Tivoli® System Automation for z/OS. HCM is the graphical user interface to HCD. It does not replace HCD, but is used in conjunction with HCD and its selected IODF. HCD runs on the host; HCM runs on a workstation. The host requires an internal model of its connections to devices, but it is far more convenient and efficient for you to maintain (and modify) that model in a visual form. HCM maintains the configuration data as a diagram, in a configuration file, in sync with the IODF. The IODF contains only logical definitions; the configuration file contains a subset of the logical data from the IODF, plus physical information added using HCM. Together, the IODF and the configuration file data form a single data source or repository, providing you with a complete view of both the logical and physical aspects of the hardware configuration. Finding and fixing configuration problems is made much easier because physical and logical information cannot diverge. Chapter 1. Introduction 7