Volume Master File Inquiry and Update › How CA TLMS Updates the VMF

How CA TLMS Updates the VMF

The Volume Master File is automatically updated to reflect any changes in tape movement or scratch status:

• Dynamically by the online recorder each time a tape is processed
• Daily, when CATTRS is executed to run the tape retention system (TRS)

The following information is maintained:

• Volume status information
  • Multivolume and multi-data set information
  • Service/scratch indicator
  • Relative file sequence, number, and count
  • Relative volume number and count
• Data set characteristics
  • Data set name
  • Creation information
  • Last used information
  • Abend status
  • DCB information
  • Tape drive address
• Volume maintenance information
  • Temporary read errors
  • Erase gaps
  • Use counts

The online recorder also automatically updates the VMF Index file to reflect the volume serial number for the data set.