Building IOCDSs

You have to use HCD to build an IOCDS from a production IODF. Processors may have varying numbers of IOCDSs. One IOCDS is used at POR time to make the configuration data known to the channel subsystem.

HCD allows you to build an IOCDS for processors that do not have an SNA address defined as well as for processors with an SNA address configured in an S/390 microprocessor cluster and controlled by the Hardware Management Console. You can do the following:

• Display the IOCDS status
• Write a new IOCDS
• Switch IOCDS to become the active one for the next POR
• Enable/disable the write protection of the IOCDS (only for S/390 microprocessor cluster)

For more information, refer to Build an IOCDS in the z/OS HCD User's Guide.