Hardware Thread, New server - Which raid? in Technical; Originally Posted by Midget
if you can afford it, go RAID10, it's faster and more redundant.
Faster yes, more redundant ...
21st August 2008, 01:20 PM #16
Faster yes, more redundant no. Both RAID-5 and RAID-1 offer 1 disk redundancy. Also RAID-10 will have a lower capacity than on RAID-5. If 2 disks go you are screwed. RAID-6 gives 2 disk redundancy as does RAID-50, which should be slightly faster than RAID-6. The redundancy is better on RAID-6 than RAID-5. Hot spares are a very good idea!
Originally Posted by Midget
I have a 12-disk SAN here, 10xRAID-50 + 2xHot Spares = 4 disks can fail before I have to totally panic!
21st August 2008, 02:26 PM #17
yes RAID10 gives less capacity, but then RAID5 gives less than RAID0
Why would you ever allow 2 disk to get screwed? Only idiots would not notice a failed HDD and there is a lower chance of both of the same section of the stripe failing.
If 2 disks fail irrepairably in RAID5 then you are done.
as we were tlaking about <6HDDs then RAID 6 is a bit useless.
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