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.