Redefinition and replacement of I/O configuration data

The following example describes the steps you can use to replace the existing I/O configuration data on a CPC. Use this procedure when the I/O configuration for the CPC changes and you must run IOCP.
  1. Update your IOCP input file to reflect your new I/O configuration.
  2. Run IOCP with JCL statements to validate the IOCP statements you updated in Step 1. In the PARM parameter of the EXEC statement, use the WRTCDS=NO option.
  3. If there are any errors in the IOCP statements, correct the errors and rerun IOCP (Step 2).
  4. Analyze the IOCP configuration reports (produced in Step 2) to ensure that you have defined the I/O configuration that you want. If necessary, revise the IOCP statements and rerun IOCP (Step 2).
  5. Run IOCP using JCL statements that specify a write option (WRTCDS=Ax). IOCP writes the specified IOCDS to the Support Element hard disk. The system operator must respond YES to IOCP message ICP050D before IOCP writes to the Support Element hard disk.
  6. Update your z/VSE® IPL procedure ($IPL...) to reflect the changes you made to the IOCP input file.
  7. Perform a power-on reset of the CPC with the appropriate IOCDS specified as the source of your configuration data. Click Disable Write Protection under Options on the Input/Output Configuration window of the Support Element to remove write protection.
  8. Test the new configuration.