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2x seagate in raid0 or a raptor? - Page 4

post #31 of 38
Well, with the access times on the Raptor being 4ms better, I would've gone for that, but due to recent events I probably won't be getting a new hard drive... need a new processor and motherboard it seems.
    
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post #32 of 38
hmm... I'm sorry to hear that.

so what is better... access times or burst speed? It would appear that the RAID array has slower access times, but the burst speed is extremely faster.
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post #33 of 38
Quote:
Originally Posted by YiffyGriffy
Well, with the access times on the Raptor being 4ms better, I would've gone for that, but due to recent events I probably won't be getting a new hard drive... need a new processor and motherboard it seems.
Why is that? The double average read makes a wayyy higher impact in noticeable performance than the seek time does. Plus, we're talking 4 MS here (milliseconds). Thats not even close to a noticeable timeframe. I noticed that raptors arent really as good as I thought they were. I was going to get a 36gig raptor and an audigy 2 zs but Crash talked me into getting watercooling instead which Im sooo glad he did! I now get an audigy 2 zs on a trade with Acturbo and I ended up getting another 80gig seagate for RAID-0 which I think was a much better choice over the raptor. I thought that a raptor would equal a raid-0 but now I know that it doesnt even come close.
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post #34 of 38
Quote:
Originally Posted by bigval
Why is that? The double average read makes a wayyy higher impact in noticeable performance than the seek time does. Plus, we're talking 4 MS here (milliseconds). Thats not even close to a noticeable timeframe. I noticed that raptors arent really as good as I thought they were. I was going to get a 36gig raptor and an audigy 2 zs but Crash talked me into getting watercooling instead which Im sooo glad he did! I now get an audigy 2 zs on a trade with Acturbo and I ended up getting another 80gig seagate for RAID-0 which I think was a much better choice over the raptor. I thought that a raptor would equal a raid-0 but now I know that it doesnt even come close.
Access times are more important than transfer rates. When a piece of software makes a request for data, it's often looking for a small piece in a random location, so quicker access times allow the drive to find it faster and send it down the pipe. NCQ kinda of changes that by placing data on the disk in a logical order, but still. Unless you're doing large database streming or compression/decompression from the disk, access times will have a great impact. And 4 miliseconds is a lot in terms of access times of hard drives considering that's 33% faster than the RAID array.
    
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post #35 of 38
Quote:
Originally Posted by YiffyGriffy
Access times are more important than transfer rates. When a piece of software makes a request for data, it's often looking for a small piece in a random location, so quicker access times allow the drive to find it faster and send it down the pipe. NCQ kinda of changes that by placing data on the disk in a logical order, but still. Unless you're doing large database streming or compression/decompression from the disk, access times will have a great impact. And 4 miliseconds is a lot in terms of access times of hard drives considering that's 33% faster than the RAID array.
here are my benches for 2x 74gb raptors in raid 0. i keep windows, games, and benchmarking stuff on the raptors, and my other files (pictures, music, videos, etc.. on a 160gb maxtor.
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post #36 of 38
hey soloz2 your 2x 60gb are seagate?
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post #37 of 38
no, they're 80gig.

hmm... so when you compair my RAID 0 array with Orion's RAID array I would have to say that the Raptors are ever so slightly faster than my seagates.

Raptor RAID
random access 7.8ms
CPU 16%
Avg. Read 126.6mb/s
Burst 203.7mb/s

Seagate RAID
random access 12.6ms
CPU 10%
avg read 96.2mb/s
burst 215.5mb/s

What supurised me is that my drives had faster burst speed, but the slower avg speed of about 20mb/s would add up over time.

I guess it's
raptors in Raid > seagates in raid > single raptor > single seagate.... basically the conclusion that we came to earlier, but it's good to know for sure.

I didn't think that my RAID array would perform as well as it did compared to a Raptor array... for the price performance I'd say the seagates are a better deal as both of my drives cost less than a single Raptor
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post #38 of 38
if i were to do it again (and maybe if i had a different motherboard) id almost opt for 4x 120gb drives in raid 0. it would have cost about the same as my raptors, and it would have given better data transfer rates and such. it may not have been very great with random access, but i would have had 480gb instead, pay about the same amount, and get similar if not better results
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