I/O configuration considerations

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IOCP supports coupling facility channel path definition on the z17.

With z/OS®, HCD provides controls for defining coupling facility channels. HCD also automatically generates the control unit and device definitions associated with CE3 LR, ICA SR coupling links, or ICP channel paths.

Note: It is recommended that you use the Hardware Configuration Definition (HCD), when possible, to define the coupling facility channel configuration to the channel subsystem.