We used to use a script to generate a huge junk file and back that up to
tape and measure speed with whatever backup software we were using and
determine speed with that.

One big file fills the buffer, etc and shows faster speeds that a bunch of
little smaller files do. A bunch of smaller files will cause the shoe
shining effect.

SO, what Im suggesting  is that if you can, or have, one big file you can
use, like 10 GB .. use that as a file to back up to test speeds to tape.

You can also look at IOMeter. That may help.

 

From: David Lloyd [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, November 05, 2008 7:42 AM
To: NT System Admin Issues
Subject: Measuring Scsi speed

 

Hi all,

 

Does anyone know of a script / program I can run on a windows 2003 server to
check

i/o speed to an external scsi tape drive?

 

Thanks

 

David

 

 

 

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