text: The following devices are supported by Content Manager OnDemand: 
  
  (cid:2) IBM DR450 and DR550 
  
  These devices are disk-based systems that contain a Tivoli Storage Manager that runs 
  data retention protection. 
  
  (cid:2) EMC Centera 
  
  This device is a disk-based system that is treated as a device by Tivoli Storage Manager. 
  Tivoli Storage Manager must run data retention protection. 
  
  **10.5.4 Storage Manager-based expiration (z/OS only)**
  
  The**ARSEXOAM**and**ARSEXPIR**programs are used for storage manager-based expiration. 
  
  **ARSEXOAM**
  The**ARSEXOAM**program is used to process the rows in the ARSOAM_DELETE table that 
  indicate that Content Manager OnDemand OAM objects expired and to remove the 
  associated table entries for those objects. This program works for z/OS only. 
  
  Figure 10-4 shows how the**ARSEXOAM**program deletes the index entries for object stores in 
  OAM. 