Utilities and Procedures › CATVMFRS - Restore the Volume Master File › Expanding or Decreasing the Volume Master File

Expanding or Decreasing the Volume Master File

The VMF initialization program TLMSVMFU is also used to

• Add new ranges of volume serial numbers
• Delete existing ranges of volume serial numbers
• Expand/decrease the multivolume/multi-data set record area
• Add or delete the auxiliary message area

Important! Should an overflow warning message occur indicating that the VMF is near its capacity, you must delete entries or expand the file size to prevent data loss.