The duplexing rebuild new structure allocated by system-managed duplexing rebuild could not be made failure isolated with respect to the duplexing rebuild old structure. This is not an optimum use of duplexing since failure of a processor with both CF partitions in it would result in the loss of both structures.
The system-managed duplexing rebuild continues. This message will be DOMed when the duplexing rebuild is stopped or completed, and may be reissued if the structure is subsequently reduplexed.
Notify the system programmer.
Review your coupling facility configuration. When possible, duplex failure isolation is recommended. IBM® recommends that the installation make the necessary configuration changes (for example, making new coupling facilities available, configuring new CF-to-CF links between existing coupling facilities, updating CFRM policy to add coupling facilities to the preference list for the structure, etc.) to allow the old and new instances of the duplexed structure to be allocated in coupling facilities that are failure-isolated from one another.
Cross System Coupling Facility (SCXCF)
IXCL2ATH,IXCL2MON
2, 10
10