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Help choose HDDs for Raid0

post #1 of 25
Thread Starter 
I've been looking to replace my Seagate 7200.10 160GB (ST3160815AS) HDDs with a pair of some that are faster. I've done a lot of research and found the best ones to be:

  • Samsung Spinpoint F1 HD103UJ 1TB 7200 RPM 32MB Cache SATA2 3.0Gb/s
  • Seagate Barracuda ST3750330AS 750GB 7200 RPM 32MB Cache SATA2 3.0Gb/s
  • And then the best according to benchmarks on the web would be the Western Digital VelociRaptor WD3000GLFS 300GB 10000 RPM 16MB Cache SATA2 3.0Gb/s

****I don't, at this time, plan on getting a drive larger than 500GB. I was just throwing up some model numbers so that someone could compare the specs if they wanted to.****

I do plan on keeping with the Raid0 so I don't think I'll be able to afford two of those Raptors. The other raptors are better in access times than anything else also, but the transfer speeds aren't higher than most of the newer Seagates and that Samsung. The Samsung and Seagate I listed above also have horrible access times of between 12 and 14, where the Raptors are between 7 and 8. The samsung and seagate don't cost nearly as much as the VelociRaptor and I was wanting to know if that raptor would be worth saving up for and spending the extra cash.

Another thing that concerns me is that I've heard about a lot of people having problems with Samsung HDDs. If they really do have high failure rates I'll probably end up going with the Seagate 7200.11's, unless I can get the money for Raptor's.


Thanks!
   
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post #2 of 25
AFAIK, the 640gb WD drives are some of the fastest mainstream drives around. I've never found raptors to be a good solution as the premium is insane and the benefit is small. I wouldn't pay $1/gig just to load a game 5 seconds faster. However, if you're using the RAID to do something like video capture, then it may be worth it.

Also, you may consider going larger than 500. I believe 500 is the sweet spot for price/gig and you can get the faster 640s for not much more. If cash is a concern to the point where getting something larger than 500gb is not feasible, then there's no way you'll be able to afford the raptors anyway.
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post #3 of 25
Thread Starter 
I seriously doubt that I'll be able to afford the Raptors anytime soon. I'd rather pay $0.15-$0.20 per GB than $1. My main question I need answered is if I should consider the Samsung since I've heard about them having problems, and if what I've heard isn't true then I will most likely get two of those.

The most important improvements I'm looking for are: decreased Windows start-up and faster transfer(read and write) speeds.

I thought about the older Raptors but assumed that they couldn't be much better, maybe even slower, than my current Seagate SATA2 3.0GB/s HDDs. It seems to me that the faster operation of those would be limited by the slower interface speed, but maybe I'm wrong.
   
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post #4 of 25
The 150gb raptors and the 640gb WD perform almost exactly the same. All the newer drives should demolish the older (74/36gb) raptors. I haven't read of any issues with the 1tb specifically, but plenty with the 750gb. However, most of those have been issues with Nvidia boards.

That said, I would seriously consider the 640gb WD unless the 1tb Samsung is significantly faster than the 750gb (I haven't read a review of the 1tb yet). Here are some numbers for you.
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post #5 of 25
I personally like the WD 640AAKS drives. They are larger then I needed, but they perform in RAID 0 flawlessly.

I did a comparison between the new drives in RAID 0, and my old WD 250AKS drives. I set the stripe size on my 250GB drives in RAID 0 to 64k. With the 640Gb drives, I set the stripe size to 128k. And a final note, there is an error with HD Tach reading the burst speed, so just ignore the red graph showing 2822...

Here are my results with the 250Gb AKS:





Here are my results with the 640Gb AAKS:
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post #6 of 25
Thread Starter 
Where can I find one of these 640GB Raptors that you're talking about? The only Velociraptor I've found is 300GB. I can't even find anything other than 300GB on WD's website. And the other Raptors are 150GB, 74GB and 36GB(which I think the 36GB has been discontinued).

Edit: Nevermind about that question. Ericeod answered it for me.
Edited by Dark Volker - 7/7/08 at 3:06am
   
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post #7 of 25
Quote:
Originally Posted by Dark Volker View Post
Where can I find one of these 640GB Raptors that you're talking about? The only Velociraptor I've found is 300GB. I can't even find anything other than 300GB on WD's website. And the other Raptors are 150GB, 74GB and 36GB(which I think the 36GB has been discontinued).
The 640AAKS are not raptors. They use Western Digital's new 320Gb platter design. Here is a link to newegg:

WD6400AAKS 640GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive for $95 with free shipping
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post #8 of 25
Thread Starter 
Is the difference in Random Access times between those noticeable?
250Gb AKS: 13.3ms
640Gb AAKS: 15.8ms
   
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post #9 of 25
Quote:
Originally Posted by Dark Volker View Post
Is the difference in Random Access times between those noticeable?
250Gb AKS: 13.3ms
640Gb AAKS: 15.8ms
I can honestly say that the 640AAKS drives are better then the other WD drives I have owned.

I actually ran another test on the 640AAKS drives in Everest and found that the random access time was around 11.3ms until the last 3 seconds of the 10 min test, at which point it jumped really high thus affecting the numbers (assuming it is related to the larger single platter size when reading from the end of the drive).
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post #10 of 25
I can't say much on the reliability of Samsung drives, but people on the web seem to say that they are somewhat less reliable that other HDDs.

Still, while probing for HDDs, the 500GB are rarely from the same family as the 1TB/750GB brothers, and I mean specifically the Samsung F1. The 500GB F1 does not have the same performance, the same cache (only 16MB) or the same reliability for that matter as the 1TB.

At 500GB I searched a lot, but not even the WD GP 500GB is as good/silent/reliable as the 1TB version.

A good option is the WD 640GB, other than that you need to go up to 750GB drives to get the performance of the F1 series and close-to-raptor speeds.
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