Hello Bob

I would start with the tech-note for tuning netbackup for STK9840 drives

Sorry that I can't remember the number

Regards
Michael

On Tue, 15 Nov 2005 16:47:52 -0500, Bob Stump wrote
> Because the data buffer size equals the tape I/O size, the value 
> specified in SIZE_DATA_BUFFERS must not exceed the maximum tape I/O 
> size supported by the tape drive or operating system. This is 
> usually 256 KB or 128 KB.
> 
> For Digital Linear Tape (DLT) drives, the number that seems to give 
> the best performance for SIZE_DATA_BUFFERS is 65536. Further 
> performance improvements can be achieved by increasing the value in 
> the NUMBER_DATA_BUFFERS file.
> 
> What is the optimum for STK 9940B?
> 
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