Preference list

The coupling facilities where the structure can be rebuilt in order of preference. To add a coupling facility to the preference list, highlight the entry on the left and click Add. To remove a coupling facility from the preference list, highlight the entry in the list on the right and click Remove. When the system allocates the structure, it chooses the coupling facility based on the order of preference. If you specify No for Enforce order of preference list, the system might reorder the preference list and choose a coupling facility that meets the following criteria (listed from most important to least important):

  1.    Has connectivity to the system trying to allocate the structure
  2.    Has a coupling facility operational level (CFLEVEL) equal to or greater than the requested CFLEVEL
  3.    Is a failure-independent coupling facility in relation to the coupling facility containing the old structure in user-managed duplexing rebuild processing. The system will give preference to failure-independent coupling facilities  when allocating  the new structure during user-managed duplexing.
  4.    Has space available that is greater than or equal to the requested structure size
  5.    Meets the volatility requirement requested by the connector
  6.    Meets the failure-independence requirement requested by the connector
  7.    Does not contain a structure in this structure's exclusion list.