text: **10.5.3 Removing documents from the Tivoli Storage Manager archive**
  
  Removing a document from archive storage means that the backup (if the primary document 
  copy is in cache) or long-term copy (if the primary document copy is in archive) of the 
  document is deleted from the system. You remove documents from archive storage when you 
  no longer have a business or legal requirement to keep them. 
  
  A*management class*contains an archive copy group that specifies the criteria that makes a 
  document eligible for deletion. Documents become eligible for deletion under the following 
  conditions: 
  
  (cid:2) Administrators delete documents from client nodes 
  (cid:2) An archived document exceeds the time criteria in the archive copy group (how long 
  archived copies are kept) 
  
  ASM does not delete information about expired documents from its database until expiration 
  processing runs. You can run expiration processing either automatically or manually by 
  command. Ensure that expiration processing runs periodically to allow ASM to reuse storage 
  pool space that is occupied by expired documents. 
  
  When expiration processing runs, ASM deletes documents from its database. The storage 
  space that these documents used to occupy then becomes reclaimable. For more 
  information, see “Reclaiming space in storage pools” on page 233. 