MSA>  SET GLOBALS/EXPAND_PRIORITY=HIGH/REBUILD_
                      PRIORITY=HIGH/SYSTEM_NAME="XXX"/READ_CACHE=50/
                      WRITE_CACHE=50

                      Note: Read_cache plus write_cache must equal 100.

                      Example MSA$UTIL response for SHOW GLOBALS:

                          Controller: _$1$GGA1002: (DEFAULT)
                          Global Parameters:
                          System Name: ITA8.2-1
                          Rebuild Priority: high
                          Expand Priority: low
                          Total Cache: 256MB
                          25% Read Cache: 64MB
                          75% Write Cache: 192MB