text: In summary, better performance is achieved by distributing the storage and retrieval workload 
  over multiple systems and multiple devices. 
  
  **12.2.5 Horizontal scalability: Multiple logical partitions and systems**
  
  This scenario is similar to the multiple object server scenario where each object server is 
  running on a separate system. In this case, the library server and one or more object servers 
  are installed in separate LPARs on one or more physical systems, as shown in Figure 12-4 on 
  page 291. 