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Forum Discussion
Raid5 Failures HDD MTBF XRaid2 Raid6 Dual Redundancy
Why Raid5(Single Redundancy) is not enough and why Raid6(Dual Redundancy) is better. I was reading this with interest some time ago ..http://www.usenix.org/events/fast07/tech/schroeder/schroeder_ht...
I have read the papers. All we disagree on is the storagemojo article, which I think is misleading.
We agree that people should consider RAID-6 if they are using a large array - because as you say it is quite possible to have a second disk failure before the first disk is replaced and the array is rebuilt. In my view, you also need to have at least one independent copy of your data, and preferably two, which is a point you also make in the first post.
We agree that people should consider RAID-6 if they are using a large array - because as you say it is quite possible to have a second disk failure before the first disk is replaced and the array is rebuilt. In my view, you also need to have at least one independent copy of your data, and preferably two, which is a point you also make in the first post.
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