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Some RAID controllers speed-up read access when using RAID1. Other controllers can't do that.

Trying some RAID1 configurations, I want to know if the read speed is faster both on a single file and on several files.

There are plenty of tools which test the read/write speed of a hard drive. What about testing a RAID speed, including software RAID? Are there any tools for Windows which can do it?

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There are a couple of utilities out there, you don't say what OS so here are a few:

bonnie (Linux)
HD Tune (Windows)
Intel IOMeter (Windows & Linux)

Also the tools that test a single hard drive will work just as well against a raid volume.

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HD Tune tests the speed of hard disk, so it bypass the software RAID (and probably the hardware RAID too). Does Intel IOMeter do the same? –  MainMa Jul 17 '10 at 3:32
    
@MainMa I never use software raid so i can't give you definitive answer. I know HD Tune doesn't bypass the hardware raid (it's what i used to benchmark my work desktop w/ hardware raid for fun.) –  Zypher Jul 17 '10 at 4:21
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IOMeter can do a good job modeling real-world workloads. I highly recommend it. It won't "bypass" any RAID functionality. It reads and writes to files thru the standard Windows (or Linux) APIs. –  Evan Anderson Jul 17 '10 at 4:44
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bonnie?

http://www.textuality.com/bonnie/

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Sorry, I've forgotten to say that I'm using Windows. –  MainMa Jul 17 '10 at 3:33
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