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Lousy Samsung F4 Raid-5 performance

post #1 of 22
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Hey!

So one of my WD-s bit the dust and I thought of going RAID-5 this time, so I got three new 320GB F4-s.

I set them up with a 64KB stripe (default value) and after reinstalling Windows and all the programs I use, I downloaded HDTune and checked what performance I get out of them. Well my reaction was "meh.." because I was expecting more out of them.



Saw this other thread (Link) about the same drives in Raid-5 (different strip sizes though), but the results seem quite a bit better.

I'll just mention that the motherboard is an Asus Maximus II Formula (ICH10R).

What do you guys think about it?
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post #2 of 22
Different drive sizes would be my first guess as the platter density would be different, therefore having different results.
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post #3 of 22
Thread Starter 
Quote:
Originally Posted by KusH View Post
Different drive sizes would be my first guess as the platter density would be different, therefore having different results.
Only have those three Samsungs in RAID. So three equal drives (even the serial numbers are almost adjacent)
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post #4 of 22
Quote:
Originally Posted by Mike-O View Post
Only have those three Samsungs in RAID. So three equal drives (even the serial numbers are almost adjacent)
No, I meant from the results you're comparing it to in your link. That person used 750gb drives while yours are 640gb drives...

Edit: I scrolled down a bit on the link and saw that your results are a bit lower then what that user had.

I'd try a different stripe size. And see if you get close results. Also, it didn't look like it mentioned what raid controller in the link you posted the user was using.
Edited by KusH - 1/26/11 at 11:49am
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post #5 of 22
Thread Starter 
Quote:
Originally Posted by KusH View Post
No, I meant from the results you're comparing it to in your link. That person used 750gb drives while yours are 640gb drives...
The first test is with an F1 750GB. If you scroll down, then there are tests with the same drives as mine (320GB Samsung F4-s).

[EDIT]: Yup, you got it.
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post #6 of 22
why don't you get another drive and do raid 0 + 1. that might yield better speeds.
post #7 of 22
Are you sure the rebuild was complete before you started the benchmark?
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post #8 of 22
Thread Starter 
Quote:
Originally Posted by thrasherht View Post
why don't you get another drive and do raid 0 + 1. that might yield better speeds.
Nowhere to put the drive, and I'm out of SATA ports and cables as well.

Quote:
Originally Posted by wimcle View Post
Are you sure the rebuild was complete before you started the benchmark?
I'm not sure what you mean by that..
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post #9 of 22
When you first setup a raid, with any type of redundancy you have to let it build the raid so that all drives are setup properly.

like with raid 1 it has to make sure both drives are identical bit for bit.
post #10 of 22
Thread Starter 
Quote:
Originally Posted by thrasherht View Post
When you first setup a raid, with any type of redundancy you have to let it build the raid so that all drives are setup properly.

like with raid 1 it has to make sure both drives are identical bit for bit.
So I'll just leave it alone for a while and try again later?
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