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External Raid-0

post #1 of 6
Thread Starter 
Just seeing if this transfer rates looks fine to you guys. I have a Vantec(http://www.vantecusa.com/en/product/view_detail/526) external enclosure that supports and creates raid arrays. In the enclosure I have (2) 1tb hdd (Seagate St1000dm003) in raid 0. These drives are fairly fast, but when I raid 0 them I don't get much performance. I have the enclosure going through usb3.0 to my usb3.0 ports. Maybe it's just me. I'm getting about 180MB/s read and write is about 140MB/s.
 
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post #2 of 6
Quote:
Originally Posted by koulaid View Post

Just seeing if this transfer rates looks fine to you guys. I have a Vantec(http://www.vantecusa.com/en/product/view_detail/526) external enclosure that supports and creates raid arrays. In the enclosure I have (2) 1tb hdd (Seagate St1000dm003) in raid 0. These drives are fairly fast, but when I raid 0 them I don't get much performance. I have the enclosure going through usb3.0 to my usb3.0 ports. Maybe it's just me. I'm getting about 180MB/s read and write is about 140MB/s.

Most likely a USB 3.0 bottleneck. What USB 3.0 controllers?


Read: http://www.tomshardware.com/reviews/usb-3-uas-turbo,3215.html
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post #3 of 6
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Quote:
Originally Posted by DuckieHo View Post

Most likely a USB 3.0 bottleneck. What USB 3.0 controllers?


Read: http://www.tomshardware.com/reviews/usb-3-uas-turbo,3215.html

Updated host controller to latest version and also installed the usb 3.0 software utility. Now it's averaging at 227MB/s.
 
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post #4 of 6
What program are you using to test, what were the original speeds of each drive on their own when you test using the enclosure without the RAID?
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post #5 of 6
Thread Starter 
Quote:
Originally Posted by Fooxz View Post

What program are you using to test, what were the original speeds of each drive on their own when you test using the enclosure without the RAID?

I haven't tested each individual drives yet. I'm just doing this remotely from work so I'll do it when I get home. Those drives were rated at 220MB/s. I've seen them benchmarked at average about 150MB/s from several benchmarks. So that got me thinking i should have at least get a little over 200MB/s. I'm using HD tune.
 
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post #6 of 6
Quote:
Originally Posted by koulaid View Post

Updated host controller to latest version and also installed the usb 3.0 software utility. Now it's averaging at 227MB/s.

So it was definitely a USB 3.0 bottleneck. I'm surprised at that gain actually!
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