Description: z/OS® Discovery and Auto Configuration (zDAC) has improved processing of device number-constrained configurations and those with constrained unit addresses for specific channels. It is also enhanced with the capability to allow you to specify switch and CHPID maps to guide path selection and to discover directly attached devices, in addition to those connected to a switch. There is improved toleration of inactive or incapable systems identified in an LPAR group and the discovery policy enhancements allow you to forego automatic device numbering so you can provide your own device numbers. In addition, the policy refresh capability allows some policy options to be dynamically refreshed without requiring a new fabric discovery.
When change was introduced: z/OS V2R1.
Reference information: z/OS HCD User's Guide