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Scratch the Old Media

After you run CA VM:Backup for a while with the swapped catalogs, you are ready to commit to the new catalogs and tape media. To free up the A-disk space that the old catalog files occupy, scratch the old media. Use the VMBMCOPY SCRATCH command. This command resets the retention period of the old media tapes that are associated with the catalog. Then the command erases the catalog files. You see messages similar to the following one:

vmbmcopy scratch 29

CA VM:Tape (TM) Version 02.0 
CA VM:Backup Media Copy Utility, Function Level 1
File 00000029 DUMPJOB A was erased
File 00000304 DETAIL A was erased
File CA4851 FILE0001 A was erased
Tape CA4851 retention period was reset
All files were successfully erased
Ready;