If it becomes necessary to stop ECS activity, use the MODIFY CATALOG,ECSHR(DISCONNECT) command to quiesce ECS activity (see Quiecsing ECS Activity) and disconnect from the ECS structure in the coupling facility. This command initiates a normal disconnect which will cause all other systems in the sysplex to quiesce their ECS activity, but the other systems will not disconnect from the structure.

To disconnect all the systems in a sysplex, issue the disconnect command on one system, wait for all systems to quiesce, then enter (route) a disconnect command on each of the other systems. Performing the disconnect in this manner initiates only one quiesce operation and limits the communications between systems necessary for the quiesce to be processed. You can use the D XCF,STR,STRNAME=SYSIGGCAS_ECS command to display the active systems connected to the cache structure.