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SATA II vs SATA III for mechanical hard drives in RAID 0

post #1 of 16
Thread Starter 
I am looking to buy 2 1TB hard drives and place them in a RAID 0 array, and I am stuck with what interface to go with. The Samsung HD103SJ SATA II are on sale right now for $69.99 each at newegg. While the Seagate Barracuda ST1000DM003 SATA III drive is $89.99 at newegg.

Even in RAID 0 with mechanical hard drives will I see a significant increase in performance with SATA III vs. SATA II?
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post #2 of 16
Mechanical hard drives haven't even come close to the 3Gb/s of SATA II, let alone SATA III. And even if you're getting 800MB/s in RAID 0, it's not all going through one SATA cable, so it doesn't really matter.
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post #3 of 16
Thread Starter 
That's what I thought. I'll just go with the Samsung drives and save some money.
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post #4 of 16
Quote:
Originally Posted by UsernameGoesHer View Post

Mechanical hard drives haven't even come close to the 3Gb/s of SATA II, let alone SATA III. And even if you're getting 800MB/s in RAID 0, it's not all going through one SATA cable, so it doesn't really matter.

As Username said, mechanical harddrives can not saturate a SATA II interface, so it does not matter if you are using SATA II or SATA III harddrives.
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post #5 of 16
Thread Starter 
I just ordered the Samsung drives from new. I am all for saving money! Thanks everyone!
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post #6 of 16
Also you support samsung which is anti-apple which is good.
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post #7 of 16
Actually, the Samsung drives are made by Seagate now. I just picked up a second pair, so I'm hoping Seagate didn't screw them up making them in their plant in China.
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post #8 of 16
I've used just about every hard drive company in the last 5 years. Never had a problem with reliability, even with open box hitachis, which most people would be a double no for.
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crappy
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1x WD 500GB 7,200RPM / 1x Hitachi 640GB 7,200RPM Samsung DVD +/- RW burner/reader Hyper 212 + W7 64 bit ultimate 
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Razer abyssus my desk or whatever I feel like putting my mous... 
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post #9 of 16
I don't think mechanical HDDs can even maintain a constant speed of SATA1/1.5Gbps. SATA interface for consumer HDDs doesn't really matter.
post #10 of 16
My Seagate drives are dying off one by one, now. frown.gif I bought them about 2 years ago, but these are the first drives I have ever had start failing on me. I've always upgraded a drive before it went bad.

When the first drive of my RAID10 array died, I replaced it with a Western Digital 7200rpm RE4, which is a drive built specifically for use in RAID enclosures. It has a 5 year warranty, where most of the new Seagate drives have gone to 1 year warranties. Some Seagate drives are still 3 years, but those are getting harder and harder to find. From now on, I'm going to buy these RE4 drives, or at least the WD Caviar Black 7200rpm drives. They are also warrantied for 5 years, and they are covered for RAID use in desktop computers.

Keep an eye on your warranty terms, too! The Seagate consumer drives aren't covered if you have used them in a RAID enclosure, and may not be covered for RAID use even in a desktop system. This is why I have been paying the little bit extra for the drives that are built for use in RAID arrays. I really hope the extra money pays off in the future.
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