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RAID 0 or RAID 5?

post #1 of 9
Thread Starter 
OK so I have this new mobo in the mail that should be delivered by Friday. I was thinking that my next upgrade should probably be a RAID array because the single 7200 RPM hard drive I have is the most obvious bottleneck in my system.

I was planning on grabbing one of these and sticking THREE of these in it for a nice RAID 0 setup. Should I go ahead and include my current 250GB hard drive in the array and make it RAID 5? (3x80GB striped; 250GB mirroring the 80GB's) I've read that running RAID 5 off of a mobo RAID controller kills the array's performance. Is that true? And if it does, is running 3 hard drives in RAID 0 substantially better than only 2?
    
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post #2 of 9
It makes wright speeds go down. I think it is better to do RAID 0+1 instead. Mirror your drives on a spare and leave in idle otherwise. If you drives go down you have the mirror as a back up. Just as safe although it won't update itself automatically or provide instant back up.
post #3 of 9
I'd suggest Raid 10 (1+0)
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post #4 of 9
Thread Starter 
What's the difference between Raid 10 and 5?
    
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post #5 of 9
He means 2 in binary I would imagine. What is Raid 2?
    
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post #6 of 9
Quote:
Originally Posted by The_0ctogon View Post
What's the difference between Raid 10 and 5?
http://www.acnc.com/04_01_05.html

RAID10 is a stripes of a mirror. It takes at least 4 HDs, end up with 1/2 storage, and get RAID0 speed of half the drives. It can take multiple drive failure.

RAID0+1 is a mirror of stripes. It takes at least 4 HDs, end up with 1/2 storage, and get RAID0 speed of half the drives. It can take one drive failure to become a simple RAID0.

RAID5 is redundancy by parity blocks. It takes at least 3 HDs, ends up with N-1 storage, and get RAID0 speed of close to N-1 drive but poor write performance without a hardware controller. It can take one HD failure.

If you're curious, RAID6 is double redundancy by two parity blocks. It takes at least 4 HDs and end up with N-2 storage space.
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post #7 of 9
0+1 is badass
    
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post #8 of 9
Quote:
Originally Posted by Krud View Post
0+1 is badass

Hardware RAID5 is faster.
Once again...
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post #9 of 9
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post
http://www.acnc.com/04_01_05.html

RAID10 is a stripes of a mirror. It takes at least 4 HDs, end up with 1/2 storage, and get RAID0 speed of half the drives. It can take multiple drive failure.

RAID0+1 is a mirror of stripes. It takes at least 4 HDs, end up with 1/2 storage, and get RAID0 speed of half the drives. It can take one drive failure to become a simple RAID0.

RAID5 is redundancy by parity blocks. It takes at least 3 HDs, ends up with N-1 storage, and get RAID0 speed of close to N-1 drive but poor write performance without a hardware controller. It can take one HD failure.

If you're curious, RAID6 is double redundancy by two parity blocks. It takes at least 4 HDs and end up with N-2 storage space.
So there is no way I can mirror 3 striped drives with a single drive? (80GB+80GB+80GB=240GB < single 250GB) RAID0+1 would be like two 80GB striped and then the 3rd 80GB and the 250GB striped, and the two sets mirror each other right?
    
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