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PERC 5/i RAID Card: Tips and Benchmarks - Page 346

post #3451 of 7150
Quote:
Originally Posted by Stereodude View Post
FWIW, I would have used a much larger stripe size.
It was 128k before I rebuilt the array. The problem was with small files though. I have equally as much small files as large files. Small files would go very slow, while large files would go full speed.

I figured I'd balance it out a little, and so far my small files are reading much faster, and no changes have happened on the large file transfers.
post #3452 of 7150
Quote:
Originally Posted by Stereodude View Post
Sounds like you might have a "bad" drive on the array.

Have you run ATTO, IOmeter, or HDtune?
But if I had a bad drive, wouldn't the read speeds be just as bad?

I'll run some benches right now and post when I am finished. I am familiar with HDtune, but not the others. I think I've used ATTO once in the past.



Looks like these read times were worse than when I had the 3 drive array. I was doing about 220MB/s average before.
Edited by dhahlen - 10/18/09 at 4:43pm
post #3453 of 7150
pulled up the controller, failing drive indeed.

I'll post when I have a replacement!

Thanks
post #3454 of 7150
Quote:
Originally Posted by dhahlen View Post
pulled up the controller, failing drive indeed.

I'll post when I have a replacement!

Thanks
Was going to say. 150MB/s for 3x1.5TB's is pretty slow. You should be looking at probably 300MB/s or more judging by the speeds of those. And if WB is def. enabled it's degraded.
post #3455 of 7150
Write speeds are still horrible.... ran the benchmarks, rebooted to check controller if the drive fell off again, it has not.....

Before:



After Rebuild:

post #3456 of 7150
Which 1.5TB drives are you using?
post #3457 of 7150
Quote:
Originally Posted by Stereodude View Post
Which 1.5TB drives are you using?
Seagate 1.5tb 7200RPM, believe they are 7200.11

http://www.newegg.com/Product/Produc...82E16822148337

Interesting, look at the first newegg comment on that link.... under cons...

Moved about 240gb over to the server last night, rebooted the server, the raid array is still healthy as well.
Edited by dhahlen - 10/19/09 at 8:20am
post #3458 of 7150
Quote:
Originally Posted by dhahlen View Post
Seagate 1.5tb 7200RPM, believe they are 7200.11
FWIW, I tried two of the Seagate 7200.11 1.5TB drives in RAID-1 on my Perc 5/i and got really weird results as well. I am trying a single drive "array" now to see if the drive doesn't like the controller, or what might be the problem.

Here's are the results from my ATTO style IOmeter run. The results were so odd, I ran the benchmark again (and got the same results).



It's possible the 1.5TB 7200.11 drives don't like RAID, or don't like the RAID on the Perc cards. I am going to try RAID-1 on my ICH9R once IOmeter gets done testing the single drive.
Edited by Stereodude - 10/19/09 at 8:33am
post #3459 of 7150
Quote:
Originally Posted by Stereodude View Post
It's possible the 1.5TB 7200.11 drives don't like RAID, or don't like the RAID on the Perc cards. I am going to try RAID-1 on my ICH9R once IOmeter gets done testing the single drive.
Well, at least one of my 1.5TB 7200.11's seems to be delivering the same performance in a single drive "array" (though it's only 2/3rd's done). I will have to test the other one to see if they both do it.
post #3460 of 7150
Seagate has yet to fix their firmware issues with these drives =/
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