text: **Managing Tivoli Storage Manager storage**
  For each automated library, Tivoli Storage Manager tracks in its volume inventory for the 
  library whether a volume has scratch or private status: 
  
  (cid:2) A*scratch volume*is a labeled volume that is empty or contains no valid data, and it can be 
  used to satisfy any request to mount a scratch volume. To support Content Manager 
  OnDemand, you define scratch volumes to Tivoli Storage Manager. Tivoli Storage 
  Manager uses scratch volumes as needed, and returns the volumes to scratch when they 
  become empty (for example, when all data on the volume expires). 
  
  (cid:2) A*private volume*is a volume that is in use or owned by an application, and it might contain 
  valid data. Volumes that you define to Tivoli Storage Manager are private volumes. A 
  private volume is used to satisfy only a request to mount that volume by name. When 
  Tivoli Storage Manager uses a scratch volume, it changes the volume’s status to private. 
  Tivoli Storage Manager tracks whether defined volumes were originally scratch volumes. 
  Volumes that were originally scratch volumes return to scratch status when they become 
  empty. 
  
  **Secondary storage of storage volumes**
  For instructions that describe how to handle physical storage volumes and remove them from 
  the library, see the documentation that is provided by the library manufacturer. 