text: **5.4 Archive Storage Manager for IBM i**
  
  The Disk Storage Manager of Content Manager OnDemand for i maintains a copy of 
  documents on disk. Disk Storage Manager migrates documents from cache to the Archive 
  Storage Manager (ASM). ASM then migrates documents to archive media. 
  
  ASM maintains one or more copies of documents on archive media, such as disk pool, optical 
  (physical or virtual), or tape. The Content Manager OnDemand administrator decides the type 
  of archive media that is required, configures the storage devices on the systems, and defines 
  the storage devices to ASM. To store application group data on archive media, the application 
  group must be assigned to a storage set that is managed by ASM. 
  
  When an application group is created, the Content Manager OnDemand administrator 
  specifies how long the documents must be maintained on the system and whether the index 
  data needs to be migrated from the database to archive media. Content Manager OnDemand 
  system management programs use this information to migrate documents from cache to 
  ASM, delete documents from cache, migrate index data from the database to archive media, 
  and delete index data from the database. Content Manager OnDemand can then reclaim the 
  space that was used by the migrated and expired data. 
  
  Disk Storage Manager expires data based on the Life of Data and Indexes value. You can 
  access this setting by clicking**Application Group**→**Storage Management**. ASM deletes 
  data from the archive media when the data reaches its storage expiration date. The Content 
  Manager OnDemand administrator defines management information to the ASM for the 
  Content Manager OnDemand data that is managed. This management information includes 
  storage volumes that can contain Content Manager OnDemand data, the number of copies of 
  a report to maintain, and the amount of time to keep data in the archive management system. 