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Raid 0/1 Concept

post #1 of 6
Thread Starter 
I have been recently looking in to raid configurations and I think might have thought up a new concept if not prove me wrong. Raid 0 configurations are great because they give you more storage and faster read/write performance but are half as reliable for if a drive fails. Raid 1 configurations are great for security because if a drive fails all the information is stored on another drive but you don't increase capacity or read/write performance. Raid 10 configurations are the current solution to get the best of both worlds involving a minimum of 4 drives which are a pair of raid 0's in a raid 1 setup.

What i came with up is if you had just 2 of 3 drive in a Raid 0 setup in a Raid 1 setup to a single drive. This will in theory give you the benefits of a Raid 0 with the reliability of a Raid 1 and require one less drive making is cheaper to setup then a Raid 10.

post #2 of 6
Raid 5 is what you want for 3 drives. You lose 1/3 of total available drive space but one drive of the 3 can fail and the system has lost no information. In your setup, you've lost 1/2 of total available drive space.
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APU what?
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post #3 of 6
that ^ RAID 5

or you just do a RAID 0 and then do a nightly backup to the single drive...
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post #4 of 6
Thread Starter 
Quote:
Originally Posted by Sean Webster View Post

that ^ RAID 5

or you just do a RAID 0 and then do a nightly backup to the single drive...

"RAID 0 and then do a nightly backup to the single drive" I like this idea because it does what i was trying to accomplish in a way. Thanks for the feedback everyone i kinda figured there might have been a better why of doing it. I was just trying to use my creative brain biggrin.gif.
post #5 of 6
Your idea is flawed. You actually wouldn't get any benefits from RAID 0 at all. The larger volume can't happen because HDDs max out at 4TB right now, and the performance boost won't happen because you're bottlenecked by the single mirror drive. You need RAID 10 or 01 to get the full benefits of both, but RAID 5 works similarly if you have three drives. Just be sure to check for bad sectors often, otherwise, if parity data is in one, the rebuild could fail and all data is gone. It's unlikely, but it's a real possibility. It's probably safer to get a big, slow durable drive and two Raptors or something in RAID 0.
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post #6 of 6
Quote:
Originally Posted by CynicalUnicorn View Post

Your idea is flawed. You actually wouldn't get any benefits from RAID 0 at all. The larger volume can't happen because HDDs max out at 4TB right now, and the performance boost won't happen because you're bottlenecked by the single mirror drive. You need RAID 10 or 01 to get the full benefits of both, but RAID 5 works similarly if you have three drives. Just be sure to check for bad sectors often, otherwise, if parity data is in one, the rebuild could fail and all data is gone. It's unlikely, but it's a real possibility. It's probably safer to get a big, slow durable drive and two Raptors or something in RAID 0.

That's OK because if the RAID rebuild fails, all you need to do is wipe the array, replace the disks, re-initialize it and restore from backup. Because you wouldn't operate a RAID array without a backup now.. would you?
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