DFSMShsm uses the dump analysis and elimination (DAE) function to suppress duplicate dumps. To suppress duplicate dumps, issue the SETSYS SYS1DUMP command and then ensure that the SYS1.PARMLIB member ADYSETxx is coded with the keyword SUPPRESSALL. For example:

  DAE=START,RECORDS(400),SVCDUMP(MATCH,UPDATES,SUPPRESSALL)

DAE with sysplex scope allows a single DAE data set to be shared across systems in a sysplex. Coupling services of the cross-system coupling facility and global resource serialization must be enabled in order for the DAE data set to be shared and dumps to be suppressed across MVS™ hosts using DFSMShsm. For information about setting up the shared DAE data set, refer to z/OS MVS Diagnosis: Tools and Service Aids.