When primary space management, secondary space management, or event-driven migration needs to be restarted

Table 1 lists causes of interruptions to primary space management, secondary space management, and event-driven migration. It also lists how to restart these functions.

Table 1. Restarting primary space management, secondary space management, or event-driven migration
Cause of Interruption	How to Restart
System outage	IPL system, then start DFSMShsm (S DFSMSHSM)
Stop DFSMShsm (F DFSMSHSM,STOP)	Restart DFSMShsm (S DFSMSHSM)
Hold automatic volume space management HOLD MIGRATION[(AUTO)]	Release automatic volume space management RELEASE MIGRATION[(AUTO)]
Hold automatic secondary space management HOLD MIGRATION[(AUTO)]	Release automatic secondary space management RELEASE MIGRATION[(AUTO)]
Cancel DFSMShsm	Start (S DFSMSHSM)
SETSYS EMERGENCY	SETSYS NOEMERGENCY
Migration held because output media is not available	ADDVOL, then RELEASE MIGRATION[(AUTO)]