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Newb to RAID needs help

post #1 of 10
Thread Starter 
Hey guys

I dont know much about RAID other than the benefits.

A lot of new motherboard today offer RAID support. Is this all I need to set up a RAID config?
Once it is set up, can I install a HDD on its own? For example, Il get 2 SSDs in RAID 0, could I plug in a 1TB drive?

One last question... whats the different between hardware RAID and software RAID?

Thnx a maaddd tons if you answer!!
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post #2 of 10
1 thing you need to know - MOST raid types increase the chance of drive failure. Redundancy RAIDs such as RAID-1 give protection against HARDWARE failure, but any other sort of data loss is the same as if you were not in a RAID.

Ok.. with that done with, yeah you can have a non raid member on the same sata controller as a raid array.

Software raid is handled by your operating system and some software, hardware raid uses dedicated hardware to do all the processing and sorting. Software raid will be slower and less reliable, and will have a greater system resource consumption.
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post #3 of 10
RAID doesn't increase drive failure chances at all.

And software RAID is not always slower or less reliable either.
post #4 of 10
Raid does not increase individual drive failure rate but having your data spread across 2 or more drives increases the chance of losing it, if one drive in a raid0 array dies you lose it all. I assume this is what Zero meant but I wanted to clarify.

My setup is a pair of small hard drives in Raid 0 to increase their total size so all my game installs fit on the same drive and then a larger drive with OS and storage partitions. Works well enough for me, its run off the intel sata controller on my mobo.
Edited by m4rtian - 4/17/11 at 9:42am
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post #5 of 10
Quote:
Originally Posted by the_beast View Post
RAID doesn't increase drive failure chances at all.

And software RAID is not always slower or less reliable either.
OK - it increases the chance you will lose all your data. Happy?

And comparing any sort of half-decent hardware raid to a software raid, the hardware will always be better. We aren't talking about a $5 usb raid controller here. nitpick much?

Do you have anything useful to offer this guy or are you just grumpy?

Quote:
Originally Posted by m4rtian View Post
Raid does not increase individual drive failure rate but having your data spread across 2 or more drives increases the chance of losing it, if one drive in a raid0 array dies you lose it all. I assume this is what Zero meant but I wanted to clarify.

My setup is a pair of small hard drives in Raid 0 to increase their total size so all my game installs fit on the same drive and then a larger drive with OS and storage partitions. Works well enough for me, its run off the intel sata controller on my mobo.
Yes this is exactly what I meant. No RAID wont magically kill your drive but if you lose all your data, thats what matters
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post #6 of 10
Thread Starter 
Well I understand the risks of any hardware failure, and RAID 0 does not increase security, if Im right.???

I wanted to get small SSD's and RAID 0 them to increase speeds/size. I will most likely be using software RAID, if my MoBo supports it, so I guess I should still see some improvement? Im not looking for best benchmark or anything, just noticable difference.

THnx guys for the responces
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post #7 of 10
Quote:
Originally Posted by MacNcheese View Post
Well I understand the risks of any hardware failure, and RAID 0 does not increase security, if Im right.???

I wanted to get small SSD's and RAID 0 them to increase speeds/size. I will most likely be using software RAID, if my MoBo supports it, so I guess I should still see some improvement? Im not looking for best benchmark or anything, just noticable difference.

THnx guys for the responces
If you're using SSD, then yes, you'll definitely notice a difference.
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post #8 of 10
RAID does not increase any sort of security. RAID (not 0) protects you from hard drives failing and allows you to replace the dead drive so you do not lose productivity. RAID-0 gives you double read and write speed ONLY, and if ONE of your hard drives fail your screwed.

If you RAID 0 SSDs you lose trim, I ran 4 C300s in RAID-0. Your better off using one drive without RAID.

Some people will tell you its significant, but I have only noticed it in benchmarks, real world usage with an SSD is not useful, since it will help with large files and you shouldn't be writing huge/large files to your SSD anyway.

Quote:
Originally Posted by wongwarren View Post
If you're using SSD, then yes, you'll definitely notice a difference.
THAT is subject to opinion.
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post #9 of 10
Quote:
Originally Posted by Zero4549 View Post
OK - it increases the chance you will lose all your data. Happy?
Not really - parity protected RAID decreases the chance you will lose your data, because a single drive failure no longer directly results in data loss) - so you're still wrong. And if you had meant increases data loss in the first place you should have said so, rather than point to an increase in drive failure rate due to RAID.

Quote:
Originally Posted by Zero4549 View Post
And comparing any sort of half-decent hardware raid to a software raid, the hardware will always be better. We aren't talking about a $5 usb raid controller here. nitpick much?
Still wrong here too I'm afraid. Decent software implementations (as found in Linux, Solaris etc) offer features that aren't present on hardware controllers, and also offer the possibilities of higher speeds (even than the best hardware cards) and improved recovery options. Not always better.

Quote:
Originally Posted by Zero4549 View Post
Do you have anything useful to offer this guy or are you just grumpy?
Well, I generally prefer what is posted to be correct, rather than uninformed drivel spouted by those who don't really know what they're talking about.

Quote:
Originally Posted by Zero4549 View Post
Yes this is exactly what I meant. No RAID wont magically kill your drive but if you lose all your data, thats what matters
Then maybe you should have said something a little closer to that in the first place, no? How is the OP supposed to know what you meant to say, when in reality you said something different?
post #10 of 10
Thread Starter 
Quote:
Originally Posted by Limes View Post
RAID does not increase any sort of security. RAID (not 0) protects you from hard drives failing and allows you to replace the dead drive so you do not lose productivity. RAID-0 gives you double read and write speed ONLY, and if ONE of your hard drives fail your screwed.

If you RAID 0 SSDs you lose trim, I ran 4 C300s in RAID-0. Your better off using one drive without RAID.

Some people will tell you its significant, but I have only noticed it in benchmarks, real world usage with an SSD is not useful, since it will help with large files and you shouldn't be writing huge/large files to your SSD anyway.
When you RAIDed your SSD's, did you have a storage drive also?
And, arent the chances of an SSD failing low when compared to an HDD? So raid 0 with SSD's should be safer than HDD's?
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