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HDTune; weird results?

post #1 of 9
Thread Starter 


Starting from right to left...

1.) RAID1 from nVidia onboard.

2.) RAID5 from VIA PCI Card.

3.) 1st drive in RAID5 from Silicon Image.

4.) 4th drive in RAID5 from Silicon Image.


***************

I've tried the drive on other SATA ports; works just as the others do. Do I have a bad port on my RAID card?
    
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post #2 of 9
From your point of view it all makes sense....from my point of view I have no idea what you just posted...or is it just me?

Is HD tune set with block size to 8MB for benchmarking?
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post #3 of 9
Thread Starter 
Look at the top most window. Notice how it goes from approx 0mb/sec to 90mb/sec over and over again.

Not normal.

Block size is 8MB on all of 'em.
    
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post #4 of 9
Quote:
Originally Posted by killabytes View Post
Look at the top most window. Notice how it goes from approx 0mb/sec to 90mb/sec over and over again.
Right....so whats this bit about?
Quote:
Originally Posted by killabytes View Post
Starting from right to left...

1.) RAID1 from nVidia onboard.

2.) RAID5 from VIA PCI Card.

3.) 1st drive in RAID5 from Silicon Image.

4.) 4th drive in RAID5 from Silicon Image.
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by PeterUK View Post
Right....so whats this bit about?
Is it that hard to follow? I was describing each HD Tune window.

Either way I put the affected drive on the VIA Raid card and now I get this:


    
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post #6 of 9
Yes - it is that hard to follow. Are you testing a drive, or an array? You aren't being clear.

Your last benchmark shows you are bottlenecked by the controller - as most cheap controllers are garbage even in RAID0 (let alone RAID5) I would junk that card completely. If you want to keep going with it, then forget RAID5 for starters, and just update your drivers. You won't get more than 100MB/s out if it though as it's a PCI card - that's all you'll get out of the bus. That may well have been your issue in the first set of benches too - anything else on the PCI bus at the same time will result in the crashes to 0MB/s you observed, as the bus is busy with the other transfer, meaning the card can't transfer anything at all.

Without knowing more about your setup (card model, chipset, drivers, drives, array parameters, system specs) that's about all the help we can offer.

And posting just the scores without the benchmarks is meaningless too - if we can't see the plot we can't diagnose many of the issues.
post #7 of 9
Thread Starter 
Quote:
Originally Posted by the_beast View Post
Yes - it is that hard to follow. Are you testing a drive, or an array? You aren't being clear.

Your last benchmark shows you are bottlenecked by the controller - as most cheap controllers are garbage even in RAID0 (let alone RAID5) I would junk that card completely. If you want to keep going with it, then forget RAID5 for starters, and just update your drivers. You won't get more than 100MB/s out if it though as it's a PCI card - that's all you'll get out of the bus. That may well have been your issue in the first set of benches too - anything else on the PCI bus at the same time will result in the crashes to 0MB/s you observed, as the bus is busy with the other transfer, meaning the card can't transfer anything at all.

Without knowing more about your setup (card model, chipset, drivers, drives, array parameters, system specs) that's about all the help we can offer.

And posting just the scores without the benchmarks is meaningless too - if we can't see the plot we can't diagnose many of the issues.
Everything you asked for is pointless. My questions was about nothing more than experiences with a drive going from 0MB to 90MB. That's it.

I have no issues with 100MB/Sec this is a file server not a gaming system. It does nothing more than sever out movies or documents. I just wanted input on the drive's speed dropping out.
    
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post #8 of 9
But without knowing the details I mentioned, we can't tell you if it's a bad port, bad controller, bad drive, bad drivers, bad array settings, system activity or a PCI bus bottleneck (and maybe others I've missed). Your benchmark pic could indicate any of them. If the details weren't important to answer your question I wouldn't have asked for them.

I also am not recommending you junk the card just because of the speed - the fakeRAID controller will bite you sooner or later, and your array will fall offline with no hope of recovery. I've seen it happen way to often with people thinking that their RAID5 is bulletproof, especially as it's on an add-in card so must be 'hardware' RAID.

But if you don't want help, fine. Enjoy your troubleshooting. Good luck - you're on your own.
post #9 of 9
Thread Starter 
It's been running straight for 7 years. I don't think it's going to bite me anytime soon.

I never once said I think it's bullet proof. I'm not sure where you are gathering this information.
    
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