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RAID 0, Hard drive failed! - Page 3

post #21 of 28
RMA time depends on distance form their RMA facility. Mine only took 4 days, but I live about two hours from their RMA facility, so that might be a sign of a long wait for you.

You might want to use a Raid 1 array. While it comes with a slight decrease in write times, it gets total redundancy and it gains the same read performance gains from Raid 0 (because it can read from multiple disks)
post #22 of 28
So there IS an increase in speed with a RAID1 setup? I was under the understanding that there is only the advantage of redundancy. But hey if there is a seek speed increase that's a bonus to having the backup feature of data.
post #23 of 28
You're correct, RAID 1 will NOT be faster than a single drive...actually probably slower though it is the safest. RAID 5 gives you the safety net of losing one drive in the array, but also adds some time because it has to manage the parity as well. If a drive goes down, performance will be mediocre at best with RAID 5 until you replace the drive and rebuild the array.

RAID 3 is good, but not many boards support it and it's not that common afaik.

I went with RAID 10 (0+1) so I have the speed of RAID 0 with the redundancy of RAID 1. It takes a minimum of 4 drives to do this, but I feel it's the best compromise. Also, since it's basically just mirroring a RAID 0 stripe, there is no parity management and write transactions are not slowed as with R5.

Of course, RAID is NEVER a substitute for a good backup policy.
post #24 of 28
Sorry to hear that frown.gif

I'm personally using Drive mirroring in my WHS 2011 box on two 1.5 TB's for documents and pictures. The CPU overhead it uses is minimal when you have at least a dual-core. Then a 2 TB for movies and a 120 GB SSD for OS and music that's backed up to an external 500 GB
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post #25 of 28
RAID 0+1 using 4 WD Black 1TB models 7200 RPM these are backed up to an external 2TB WD. RAID 0 is a really bad idea as I also found out:)
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post #26 of 28
Quote:
Originally Posted by linuxfueled View Post

RAID 0+1 using 4 WD Black 1TB models 7200 RPM these are backed up to an external 2TB WD. RAID 0 is a really bad idea as I also found out:)

That's pretty over-the-top, I like it biggrin.gif

How do you have the RAID backing up to the 2 TB?
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post #27 of 28
Quote:
Originally Posted by Gmcenter53 View Post

So there IS an increase in speed with a RAID1 setup? I was under the understanding that there is only the advantage of redundancy. But hey if there is a seek speed increase that's a bonus to having the backup feature of data.
AdmiralThrawn is incorrect in the RAID1 read performance being same or close to RAID0.

There is a marginal gain in random reads with RAID1 since you have two drives seeking for the same piece of data. One is bound to get there first and on average will be lower times.... very slightly.

Quote:
Originally Posted by Jerm1970 View Post

I went with RAID 10 (0+1) so I have the speed of RAID 0 with the redundancy of RAID 1. It takes a minimum of 4 drives to do this, but I feel it's the best compromise. Also, since it's basically just mirroring a RAID 0 stripe, there is no parity management and write transactions are not slowed as with R5.

RAID10 and RAID0+1 are two different things.
RAID10 is a stripe of mirrors.
RAID0+1 is a mirror of stripes.

RAID10 is a bit better in redundancy since it is possible to survive two disk failures (if and only if the failed HDDs are on the different mirrors). RAID0+1 can only survive with one disk failure ever.






I can't wait until W8 Storage Pools.... unmatched disk with redundancy native to Windows!
Edited by DuckieHo - 1/27/12 at 7:34am
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post #28 of 28
Thanks for clarifying DuckieHo, I got a bit confused when initially researching the differences. I am using RAID 10 as my mobo supports only 0,1,5 and 10. So I have been describing it wrong elsewhere as well. Thanks for the info.
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