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RAID 0 using 3 or 4 HDDs?

post #1 of 9
Thread Starter 
May be a stupid question... IDK, but can you RAID0 3 or 4 harddrives like you can with 2 harddrives?
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post #2 of 9
I believe you can.
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post #3 of 9
Quote:
Originally Posted by pauldovi
May be a stupid question... IDK, but can you RAID0 3 or 4 harddrives like you can with 2 harddrives?
Yes, it's usually referred to as a Matrix instead of an array, but it's still an array. The more drives, the faster
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post #4 of 9
Sure you can, and with a RAID 0 system, the more drives you have striped, the faster your system will run.

BUT: if you have more than 2 drives, you may want to consider RAID 5 if your RAID controller supports it. It'll give you the speed benefits of a RAID 0, but also give you backup in case of a drive failure. RAID 5 systems will rebuild the data on ONE failed drive after it's replaced. If more than one goes at a time, the array is wasted though, and will have to be rebuilt. RAID 5 is not as efficient with space, due to the parity bits being spread around, and I don't have an exact figure on how much extra space the redundancy takes up, but I would think it would be worth it.



-Sean
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post #5 of 9
Thread Starter 
I wonder how fast 4 150GB Raptor 10K would be in RAID0....
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post #6 of 9
Quote:
Originally Posted by pauldovi
I wonder how fast 4 150GB Raptor 10K would be in RAID0....
Ever heard about the "Law of Diminishing Returns?"
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post #7 of 9
Thread Starter 
Quote:
Originally Posted by sccr64472
Ever heard about the "Law of Diminishing Returns?"
Hehehe, I would have to have to worry about that!
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post #8 of 9
Quote:
Originally Posted by sccr64472
Ever heard about the "Law of Diminishing Returns?"
Yeah but in that case I dont think it would apply it would be faster with 4 drives than 2 but the cost per speed increse wouldn't be economical for the average user.
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post #9 of 9
I was die-hard pro raid0 but not so sure nowadays, and so with my two 74G raptors, put one on my gaming rig and the other on my rig dedicated for ripping/encoding movies... my main concern is that average random access speed is greater because for each stripe read cycle (disk1, disk2, disk1, etc..) is the greater of the two....

read1 5.50 5.70 | 5.70
read2 5.20 5.90 | 5.90
read3 5.60 5.40 | 5.60
read4 5.10 5.80 | 5.80
avg 5.35 5.70 | 5.75

the random seek of raid0 would always be higher than either single drive...
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