Well I'm lost with RAID...

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dared3vil0

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#1 dared3vil0
Member since 2009 • 1254 Posts

Well Hi everyone! I have 2x 500GB HDD's and i'd like to make them raid... I need to know how to do this, basically everything you can tell me would be helpful... thanks!

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d-rtyboy

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#2 d-rtyboy
Member since 2006 • 3178 Posts
Well, you have to change the settings in the BIOS and then after the POST you have to press a combination of keys which is in your motherboards instruction manual. Then in the menu set up the RAID array. You then have to (re)format the hard drive and reinstall your OS. My experience with RAID is that it doesn't help performance that much. It's handy if you have a large amount of storage drives and you just want to make it one drive to clean up the mess in Windows Explorer, but if you're looking for a performance boost you're not really going to see a very big one if one at all.
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Byshop

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#3 Byshop  Moderator
Member since 2002 • 20504 Posts

There are a lotta different RAID levels and a lotta different RAID controllers. RAID 0 on even a semi-decent controller will definiately give you a speed boost, but of course it doubles you chances of data loss since one hard drive going down means total loss of data for both.

That said, the instructions above are assuming a motherboard RAID controller. Most motherboard RAID controllers are barely better than software RAID because they aren't true hardware RAID controllers and consume CPU time for disk operations.

I personally do not recommend running RAID for performance with fewer than four drives because four allows you to run RAID 10 (mirrored stripe). Of course, that would mean adding two more 500 gig drives to your setup while gaining no additional storage capacity...

-Byshop

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rock_solid

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#4 rock_solid
Member since 2003 • 5122 Posts
[QUOTE="d-rtyboy"]Well, you have to change the settings in the BIOS and then after the POST you have to press a combination of keys which is in your motherboards instruction manual. Then in the menu set up the RAID array. You then have to (re)format the hard drive and reinstall your OS. My experience with RAID is that it doesn't help performance that much. It's handy if you have a large amount of storage drives and you just want to make it one drive to clean up the mess in Windows Explorer, but if you're looking for a performance boost you're not really going to see a very big one if one at all.

you don't always have to format and reinstall. that's only if you have to do it from the bios. i went to raid 0 with no data loss. check to see if you can run intel matrix storage manager console from within windows. also, i get a good performance boost. +60%
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Byshop

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#5 Byshop  Moderator
Member since 2002 • 20504 Posts

Depends on the controller. Intel motherboard RAID blows on most mobos and lacks even basic features like the ability to add and remove drives from an array without destorying it. The feature you describe might not apply to all motherboards.

-Byshop

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#6 JigglyWiggly_
Member since 2009 • 24625 Posts

Depends on the controller. Intel motherboard RAID blows on most mobos and lacks even basic features like the ability to add and remove drives from an array without destorying it. The feature you describe might not apply to all motherboards.

-Byshop

Byshop
Intel raid controllers also are the best performing onboard RAID. Amd's and nvidia's are jokes compared to it. However nvidia's has a significantly better interface. Though none of these come close to expensive Areca RAID cards, I'm still saying 800$ :D
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#7 Byshop  Moderator
Member since 2002 • 20504 Posts

There are more modestly priced options that'll give you a more enterprise-like configuration. Promise makes a few that you can find for the couple hundred dollar range that'll give you better performance than any mobo RAID (not to mention add it to a motherboard that may lack it). That being said I run two Intel RAIDs at home (one 5 and one 10), but they are both on dedicated file/Hyper-V servers.

-Byshop

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dared3vil0

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#8 dared3vil0
Member since 2009 • 1254 Posts

Honestly, I just want to make 2 500GB HDD into 1.

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dared3vil0

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#9 dared3vil0
Member since 2009 • 1254 Posts

Honestly, I just want to make 2 500GB HDD into 1.

dared3vil0
is there an easier way?
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JigglyWiggly_

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#10 JigglyWiggly_
Member since 2009 • 24625 Posts
[QUOTE="dared3vil0"]

Honestly, I just want to make 2 500GB HDD into 1.

dared3vil0
is there an easier way?

Do you want the speed of RAID 0? Then yes RAID 0 them. If you just want to stack them use JBOD. This just adds them together and provides no redundancy either, it's just slower. The point of this is because you can make use of old hds in JBOD.
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dared3vil0

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#11 dared3vil0
Member since 2009 • 1254 Posts
[QUOTE="dared3vil0"][QUOTE="dared3vil0"]

Honestly, I just want to make 2 500GB HDD into 1.

JigglyWiggly_
is there an easier way?

Do you want the speed of RAID 0? Then yes RAID 0 them. If you just want to stack them use JBOD. This just adds them together and provides no redundancy either, it's just slower. The point of this is because you can make use of old hds in JBOD.

I don;t really need need the speed, What do i do for JBOD?
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JigglyWiggly_

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#12 JigglyWiggly_
Member since 2009 • 24625 Posts

[QUOTE="JigglyWiggly_"][QUOTE="dared3vil0"] is there an easier way?dared3vil0
Do you want the speed of RAID 0? Then yes RAID 0 them. If you just want to stack them use JBOD. This just adds them together and provides no redundancy either, it's just slower. The point of this is because you can make use of old hds in JBOD.

I don;t really need need the speed, What do i do for JBOD?

I think it's the same place where you setup RAID(Enable RAID in bios + press ctrl + i). I think there should be an option for JBOD, I have never used JBOD so my mind is a bit fuzzy.

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#13 Byshop  Moderator
Member since 2002 • 20504 Posts

You can merge the drives with JBOD or RAID 0, but you should consider the benefits versus the potential data safety drawbacks.

Upside: You get one large drive.

Downside: Losing one drive can mean losing the entire 1tb of data.

If you leave the drives seperate, you'll have two drive letters but that's not that big a deal. However, if you lose one drive you only lose the data on that one drive. If you have something important that you want to make sure you don't lose, you can copy that data to both drives for selective redundancy.

Remember that in your PC, your hard drive will eventually fail no matter what. All hard drives that are actively used eventually fail. Moving parts break down, magentic media wears out, even solid state drives have a limited number of writes in their lifecycle. You should always play for what happens when your HD fails.

-Byshop

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JigglyWiggly_

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#14 JigglyWiggly_
Member since 2009 • 24625 Posts

You can merge the drives with JBOD or RAID 0, but you should consider the benefits versus the potential data safety drawbacks.

Upside: You get one large drive.

Downside: Losing one drive can mean losing the entire 1tb of data.

If you leave the drives seperate, you'll have two drive letters but that's not that big a deal. However, if you lose one drive you only lose the data on that one drive. If you have something important that you want to make sure you don't lose, you can copy that data to both drives for selective redundancy.

Remember that in your PC, your hard drive will eventually fail no matter what. All hard drives that are actively used eventually fail. Moving parts break down, magentic media wears out, even solid state drives have a limited number of writes in their lifecycle. You should always play for what happens when your HD fails.

-Byshop

Byshop
I have 2001 Inspiron 8100 running the latest 2.6.x linux kernel, it's hd has never died :D It's invincible I tell you :P But yes, you are correct, they will fail, and I don't find use of JBOD with 2 hard drives that are identical.
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#16 JigglyWiggly_
Member since 2009 • 24625 Posts

Since you raise the question. My answer is, don't touch it. You should never ask this if you ever want to do a RAID because RAID is not for casual users. Without better understanding on the technology, you will bump into many unnecessary problems related to it.magicalclick
I don't like this terminology, people have that mindset on overclocking as well. You only properly learn when you try something :) (Oh and it's not hard or anything, be thankful you don't have to setup software RAID in Linux, eek. (Linux cannot see Intel RAID, and sees each hd individually even in RAID... such a pain))

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#17 Byshop  Moderator
Member since 2002 • 20504 Posts

Yeah RAID's not exactly rocket science. It just doesn't always make sense depending on your situation.

-Byshop