Making the first channel path connection for a coupling facility

When you connect the first CF sender channel path to a CF receiver channel path for a coupling facility, HCD creates a coupling facility control unit and two coupling facility device definitions in an IODF. When you connect the first two CF peer channel paths for a coupling facility, HCD creates a coupling facility control unit and Start of changea corresponding number of coupling facility device definitionsEnd of change in an IODF.

Perform the following steps when you connect the first CF sender channel path or CF peer channel path:

  1. In HCD, connect a CF sender channel path to a CF receiver channel path, or connect two CF peer channel paths.
  2. Accept or change the control unit and device numbers HCD proposes.
  3. Activate the new IODF.
  4. Install the channel path.
  5. To allow the system to use the coupling facility, activate a coupling facility resource management (CFRM) policy that defines the coupling facility, if one is not already activated.
  6. Configure the channel path online.
Parent topic: Making changes to coupling facility devices and control units