Monitoring tape drive performance with Symantec NetBackup in RHEL 5

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Issue

We are looking for a way to accurately measure throughput on media servers running Symantec NetBackup accessing tape drives. It appears there are no /proc interfaces to retrieve SCSI tape drive performance data from the st driver so in turn iostat is unable to measure throughput.

Environment

Red Hat Enterprise Linux (RHEL) 5
tape drives
Symantec NetBackup

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