7.1 Optimizing Sysplex Distributor intra-sysplex load balancing In a multitier application environment, situations exist where connection requests can cross logical partitions (LPARs) before reaching the appropriate application instance. The selection of a server that is on a separate LPAR than the client is initiated through workload balancing decision units such as Sysplex Distributor. Figure 7-1 illustrates a typical configuration where an LPAR crossing occurs. LPAR1 LPAR2 WAS 1 EIS WAS EIS 2 3 CS z/OS LBA CS Sysplex Distributor External Load