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What is RAID?

post #1 of 14
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I am pretty much a noob when it comes to storage and I want to learn more. To start, what the hell is RAID?
    
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post #2 of 14
redundant array of interconnected disks. there's different levels

checkit: http://en.wikipedia.org/wiki/RAID

raid 0 is for speed = each HD writes half the data

raid 1 is for backup = each HD has a copy of the file
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post #3 of 14
Plenty of info out there, different versions of RAID.

Do a search or check out the wiki, its really all there for the most part.

Quote:
Originally Posted by hokeyplyr48 View Post
redundant array of interconnected disks.
Funny how RAID has redundant in the title, yet RAID0 is not redundant.
Edited by _02 - 3/3/11 at 7:11am
    
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post #4 of 14
Honestly, there's a lot of info about RAID that needs a huge article. The above wiki link talks about it quite in depth.
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post #5 of 14
I'm sure someone is going to give you a "Let me google that for you" link.
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post #6 of 14
Quote:
Originally Posted by Mr_Torch View Post
I'm sure someone is going to give you a "Let me google that for you" link.
It is an extremely broad topic. I was going to type out an explanation, but that's been done 1,000 times. There is nothing wrong with linking to a reference when the explanation would take more than 10 minutes.

It is less productive to actually post something like that =/
    
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post #7 of 14
Quote:
Originally Posted by _02 View Post
Plenty of info out there, different versions of RAID.

Do a search or check out the wiki, its really all there for the most part.



Funny how RAID has redundant in the title, yet RAID0 is not redundant.

From what I understand RAID 0 doesn't actually meet the standard of "RAID" but it is called that for simplicity reasons.. At least thats what we were taught in school in the Army. It is actually closer to JBOD.
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post #8 of 14
It's an advanced way or arranging the data across multiple hard drives for 3 possible purposes.

1: Speed (RAID 0)
2: Redundancy + fault tolerance (RAID 1)
3: Both of the above (RAID 5,6,10,50,0+1, and many more)
post #9 of 14
I like this site when explaining RAID: http://www.acnc.com/raid.html
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post #10 of 14
Quote:
Originally Posted by _02 View Post
Funny how RAID has redundant in the title, yet RAID0 is not redundant.
That's why the level is zero. Zero redundancy.
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