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RAID 1E and 5EE?

post #1 of 10
Thread Starter 
what is raid 1E and raid 5EE??? I'm thinking about getting this controller, and hooking up 2 raptors to it. It says it supports RAID 1E and 1EE... i have never heard of that before, has anyone?
post #2 of 10
Google is your friend:
http://www.bytepile.com/raid_class.php#11
Quote:
Originally Posted by BytePile.com
RAID 1E: While RAID 10 has been traditionally implemented using an even number of disks, some hybrids can use an odd number of disks as well. Figure 2 illustrates an example of a hybrid RAID 10 array comprised of five disks; A, B, C, D and E. In this configuration, each strip is mirrored on an adjacent disk with wrap-around. In fact this scheme - or a slightly modified version of it - is often referred to as RAID 1E and was originally proposed by IBM. Let us now investigate the properties of this scheme.


RAID 5EE:
http://www.adaptec.com/en-US/_common...par_wp.htm#2.4
Quote:
Provides the protection of RAID 5 with higher I/Os per second by utilizing one more drive, with data efficiently distributed across the spare drive for improved I/O access.

-----------------------
So how does it all break down? RAID 1E is basically RAID 10/01 with an odd number of disks. A traditional RAID 10 requires an even number of disks, while in RAID 1E you are allowed to have an odd number. RAID 5EE basically improves I/O performance in a RAID 5 array.

Which one do you wany? 1E if you have an odd number of disks...or an even number. If you absolutely require it, you can go RAID 5EE because it improves write performance, which RAID 5 is notorious for being awful at.
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post #3 of 10
Thread Starter 
thanks i usually search google first but for some reason I forgot to this time.
post #4 of 10
What are you going to be using a $350 RAID card for? If you don't mind my asking.
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post #5 of 10
Quote:
Originally Posted by Burn View Post
What are you going to be using a $350 RAID card for? If you don't mind my asking.

Quote:
Originally Posted by {core2duo}werd View Post
and hooking up 2 raptors to it.

That card is overkill for what you need though. Also, I am not sure Adaptec is a first choice card.
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post #6 of 10
I understand what he is hooking up to the card, but in what application? Will it be a home server, multimedia PC, NAS, gaming rig, etc.?

If it's going to be a home PC/gaming rig, use the onboard, software RAID and save yourself $350. I was into RAID cards a while back but decided against it because it was too expensive and wasn't worth the performance gains.
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post #7 of 10
Thread Starter 
i will be editing HD video. would this controller be better? http://www.newegg.com/Product/Produc...82E16816131003
post #8 of 10
Quote:
Originally Posted by {core2duo}werd View Post
i will be editing HD video.
I would say getting more RAM would help performance more.
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post #9 of 10
Thread Starter 
yeah i'm looking into that also along with a better audio card.

Edit: actually i think i might get this for my file server instead, but not with raptors.
post #10 of 10
I myself was considering the Areca, it's good for hardware-level RAID which is in theory better. I can't say I've had excellent experience with nVidia's MediaShield RAID, it's been a horrible performer in my case and has provided no backup whatsoever when a drive headed south. In all honesty, a RAID card might be the thing for you. Just make sure it has an onboard processor to handle the I/O calculations.

In all honesty, I'd go this route: More RAM first, then get yourself a RAID card if necessary. It's a huge investment but you can use it pretty much forever.
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Burning Phoenix
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