236 IBM Content Manager OnDemand Guide
The following devices are supported by Content Manager OnDemand:
/SM590000IBM DR450 and DR550
These devices are disk-based systems that contain a Tivoli Storage Manager that runs 
data retention protection.
/SM590000EMC 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.
Figure 10-4   How ARSEXOAM deletes index entries for object stores in OAM