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BACKUP Performance Data Collection?

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The Question is:

 
I have been looking and have been unable to find a utility/command/tool of some
 sort to gauge the performance of VMS backups: specifically, the amount of data
 written to tape per unit of time. Is there such a utility/resource within VMS?

The Answer is :

 
  BACKUP does not collect and report performance statistics, so any
  measurements would be indirect -- measuring process I/O activity or
  the kilobyte map rate (if clustered) or similar.  None of these are
  particularly good nor reliable approaches.  The most direct approach
  would involve some knowledge of the data that is targeted by the
  BACKUP operation, such as the size of the input disk for a BACKUP/IMAGE.
 

  
     
     answer written or last revised on ( 15-DEC-2000 )
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