z/OS® HCD
Develop the configuration using HCD. You do not need to initially assign PCHID values to the channel paths in your configuration. You can use the CHPID Mapping Tool, available from Resource Link® at http://www.ibm.com/support/resourcelink, to aid you in assigning PCHIDs to CHPIDs. Build an IOCP input data set from a validated work IODF and use this as input to the CHPID Mapping Tool. The CHPID Mapping Tool updates the IOCP input and assigns PCHIDs to the CHPIDs. Migrate the modified IOCP input file back into a HCD IODF after PCHID numbers have been added to the file by the CHPID Mapping Tool. An IOCDS can then be written in preparation for an upgrade using a production IODF.
You can use the option Build and manage IBM zSystem cluster IOCDSs, IPL attributes, and dynamic I/O
changes
to update the selected I/O configuration data set for one or more processors.
When you install a new processor that does not contain an IOCDS, you can use HCD to build an IOCP input deck, transfer the data set to the USB flash memory drive, and run the processor's IOCP stand-alone program. For more information, see z/OS Hardware Configuration Definition User's Guide, SC34-2669.
Dynamic I/O for Standalone Coupling Facility enables dynamic activation of a new or changed IODF on a standalone coupling facility CPC, without requiring a re-IML or power-on reset (POR). This capability requires IBM z16® (Model A01) firmware support on the coupling facility CPC as well as z14 GA2 or later firmware support on the CPC where the HCD system is running. If you are planning to use the Dynamic I/O for Standalone Coupling Facility capability on a CPC, you must use HCD on z/OS to configure your IODF/IOCDS appropriately for that CPC. No IODF/IOCDS updates are required on the CPC where the HCD itself is running. For more information, see z/OS HCD User's Guide, SC34-2669.