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Harddive in RAID-0 speed limit???

post #1 of 18
Thread Starter 
Is there a limit to speed when configuring several harddrives in RAID-0?

What I mean is..

Is there a significant difference in speed with having 2 harddrives compared to 12 harddrives?

Is there an optimal number of drives when configured with RAID?

I don't mind about space but speed.
(Also, SAS drives are not for me yet so the only way is RAID-0)

Thanks.
Edited by twoneil - 5/23/08 at 7:20am
post #2 of 18
For more than 2 hard drives you will need an expensive RAID controler (>$300) to see a performance increase. It will get quite expensive.
2 drives are fast enough for me. I do a lot of video editing.
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post #3 of 18
Thread Starter 
I'm building a pc from the ground-up so the motherboard will have a Raid controller.

I'll be using it for HD editing.

Which one is better though, a 16mb SATA II or a 32mb SATA? (both are 7200RPM & same space)
I'm still deciding whether I should get 2 harddrives or 4harddrives.
post #4 of 18
An onboard RAID controler will only give you good performance on 2 drives. 32mb drives will offer better performance but if you already have 16mb then its not worth going out buying new drives.

I would suggest 2 of the 300GB raptor HDs if you have the money. That will give you a ton of performance and you wont need a raid controler. But then again, those Hds are $300 each.
Edited by mortimersnerd - 5/23/08 at 7:31am
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post #5 of 18
Thread Starter 
Oh yeah, I'm getting the ASUS Maximus Formula.
4GB(2x2GB) of Ram
Xeon 2.66

So should I get a dedicated RAID controller for more than 4 harddrives to have a higher bandwidth?
post #6 of 18
Yes, but I dont think you will need it. You will have to spend $300+ for a raid controler. I work with video and get about 140MB/s with my setup. Its fine for video editing. I work with unconpressed video which is 13.8GB/hour.
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post #7 of 18
Quote:
Originally Posted by twoneil View Post
Oh yeah, I'm getting the ASUS Maximus Formula.
4GB(2x2GB) of Ram
Xeon 2.66

So should I get a dedicated RAID controller for more than 4 harddrives to have a higher bandwidth?
Depending on HDs, onboard or dumb RAID controllers will see a performance increase 2-4 drives. However, the returns are not linear and very diminishing. With a $200+ RAID card (basically a complete PC on a card), you see close to linear scaling up to a point. Cache size really doesn't matter between 16 vs 32MB for desktop users.

How much money do you want to spend and how much space is needed?
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post #8 of 18
Quote:
Originally Posted by DuckieHo View Post
Depending on HDs, onboard or dumb RAID controllers will see a performance increase 2-4 drives. However, the returns are not linear and very diminishing. With a $200+ RAID card (basically a complete PC on a card), you see close to linear scaling up to a point. Cache size really doesn't matter between 16 vs 32MB for desktop users.

How much money do you want to spend and how much space is needed?
Thank you for claifying it.
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post #9 of 18
Thread Starter 
I would be willing to spend up to $2000 for the whole system.

It's for HD video editing.
Not into gaming (well, occasionally but I have a PS3 for that)

I need at least 500GB of harddrive space
Definitely 4GB of Ram
Quad processor.

I prefer RAID-0 over other RAID configs.

Quote:
Originally Posted by DuckieHo View Post
Depending on HDs, onboard or dumb RAID controllers will see a performance increase 2-4 drives.
Will the Asus Maximus Formula or Extreme accept 4drives and still have the speed increase?
post #10 of 18
Will you be working with uncompressed HD?

You might want to consider 8GB of ram. When editing I usually go into paged file space and I have 4GB.

The 3870 is a good card for video editing, at least from my expirence.
If it is not for gaming, why are you getting a crossfire boad?

What software do you use?
Edited by mortimersnerd - 5/23/08 at 7:50am
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