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Why RAID at all? - Page 3

post #21 of 75
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Quote:
(I'm assuming you have 4x 2TB drives, correct me if I'm wrong)
No sir, I have 8 x 1 TB drives. I never buy a technology until it's "mature".
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post #22 of 75
Quote:
Originally Posted by incurablegeek View Post
I have about 8 TB of Western Digital storage, using an ASUS Crosshair IV Formula board with an AMD 1090T (6-core), 16 GB RAM and 160 GB SSD for OS/Programs. I use Acronis and back up enough to satisfy my nagging OCD.

Why, then, would I even be attracted to RAID especially when this is what Wikipedia says about RAID-0, which we all know is not true RAID: http://en.wikipedia.org/wiki/RAID

Please understand that I am not trying to denigrate any RAID users; I just want to know if it would be helpful for me.


RAID 0. Any disk failure destroys the array, and the likelihood of failure increases with more disks in the array (at a minimum, catastrophic data loss is twice as likely compared to single drives without RAID). A single disk failure destroys the entire array because when data is written to a RAID 0 volume.

Raid-0 should not be used for a storage drive. You should edit your opening post to reflect that the Wiki info regarding Raid-0 is correct.


.
post #23 of 75
Thread Starter 
Quote:
Depending on your drive setup, I'd say RAID 1 would suit you perfectly. You'd only be able to use 4TB, but all of your data would be backed up every time you changed anything. So if a drive fails, everything that you've done or changed up until the failure is backed up.
OK, now that sounds good. If I did want to go crazy and additional HD's, could I do so without incorporating them in a RAID array. Also, what does RAID 1 do to external USB drives that may be attached and then detached?

Guys, if I seem a little slow in responding, well that's because I am printing and reading every suggestion you have. Right now, I think my brain is beginning to leak out my ears.
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post #24 of 75
Quote:
Originally Posted by incurablegeek View Post
No sir, I have 8 x 1 TB drives. I never buy a technology until it's "mature".
Hmm, well if possible, It'd probably be best to go RAID 10. 4TB usable, up to quadruple the r/w speeds, and fault tolerance (but only one failure at a time)
 
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post #25 of 75
Quote:
Originally Posted by incurablegeek View Post
No sir, I have 8 x 1 TB drives. I never buy a technology until it's "mature".
You might want to post the model ID's of those drives.... Some drives do not play nice in raids.
post #26 of 75
Thread Starter 
Quote:
Raid-0 should not be used for a storage drive. You should edit your opening post to reflect that the Wiki info regarding Raid-0 is correct.
I have ZERO tolerance for mistakes on my part. Please tell me how you would amend it. Do you think I was being too succinct?

Before I posted I did know that RAID 0 is NOT for storage of invaluable data. Catastrophic Data Loss, well I have experienced that and became a backup freak as a result. Almost lost my business 15 years ago.
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post #27 of 75
Speed. I use 3 older WD SATA2 drives in RAID0 for my system/programs drive.

This increases my disk performance without requiring I buy newer drives. I keep my important data on a separate 1tb which is backed up to a (now) external 1tb.
Edited by _02 - 1/3/11 at 1:16pm
    
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post #28 of 75
Quote:
Originally Posted by incurablegeek View Post
OK, now that sounds good. If I did want to go crazy and additional HD's, could I do so without incorporating them in a RAID array. Also, what does RAID 1 do to external USB drives that may be attached and then detached?

Guys, if I seem a little slow in responding, well that's because I am printing and reading every suggestion you have. Right now, I think my brain is beginning to leak out my ears.
Yes you could, just make sure your board can support more drives (Mine can support 10 maximum). RAID does nothing to USB drives. It only affects the drives that you want it to. (as selected in the RAID BIOS)

You've pretty much got 3 options as far as different arrays:

RAID 1 x 4 (controller might not support 4 arrays though) 4TB usable, same r/w as one drive, can tolerate up to 4 failures.

RAID 10 x 2 (again, make sure your controller can support more than one array) 4TB usable, double r/w speeds, can tolerate up to 2 failures.

RAID 10 (all 8 disks in 1 array) 4TB usable, quad r/w speeds, can tolerate 1 failure.


Didn't realize you were using the mobo SATA ports. Disregard this and see next post.
Edited by MetalBeerSolid - 1/3/11 at 1:27pm
 
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post #29 of 75
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You might want to post the model ID's of those drives.... Some drives do not play nice in raids.
Gotcha, should have thought of that but didn't. WD1002FAEX, 64 MB Cache, Caviar Black, 7,200 RPM.

Footnote: I am learning from OCN to document everything - up to and including when I take a bathroom break.
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post #30 of 75
The BIG question is what you use you PC for. Once you figure this out then your answer should be answered.

Server = Raid5
Speed, overclocking and benchmarking = SSD
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