text: **12.2.2 Horizontal scalability: Library server**
  
  Even though Content Manager OnDemand allows a single library server for each instance, 
  this library server can be scaled horizontally. The library server is scaled horizontally by using 
  one or both of the following methods: 
  
  (cid:2) The database tables (both the system and the application group) can be placed in different 
  databases (z/OS) or different table spaces (Multiplatforms and z/OS) at the table level. 
  Therefore, each of these tables can scale to the maximum practical size that is supported 
  by the database within the operational constraints of maintenance and performance. 
  Content Manager OnDemand does not impose a limitation. 
  
  (cid:2) The application group data table design facilitates the following actions: 
  
  – You can create as many application groups as you need to support the required data to 
  be archived. 
  
  – Each application group can be segmented into multiple tables where the table 
  segmentation is based on size. 
  
  – Each of these application group data tables can be placed in a separate database 
  (z/OS) or table space (Multiplatforms and z/OS). 
  
  **12.2.3 Horizontal scalability: Multiple object servers**
  
  For Multiplatforms and z/OS, you can scale a Content Manager OnDemand system 
  horizontally by using multiple object servers. 