If an ADYSET00 parmlib member is used and the DAE data set is allocated, DAE starts during IPL. Normally, DAE runs at the same time as the system. However if DUMPSRV is ever cancelled or restarted, DAE restarts as well albeit with dump suppression inactive You must manually reactivate dump suppression using the SET DAE=xx command.
An operator can stop and start DAE with the following steps. One reason to use these steps would be to change to a different ADYSETxx parmlib member with different parameters.