Coupling facility level (CFLEVEL) considerations

To support migration from one coupling facility level to the next, you can run different levels of the coupling facility concurrently as long as the coupling facility LPs are running on different CPCs. CF LPs running on the same CPC share the same coupling facility control code EC level.

When migrating CF levels, lock, list, and cache structure sizes might need to be increased to support new function. The amount of space needed for the current CFCC levels must be redetermined by visiting the CFSizer tool at http://www.ibm.com/systems/support/z/cfsizer.