(linux_command_line)-> (Parent)->Why use raid 6 ??
submited by Russell Thu 17 Feb 05|
Well I can't claim to be an expert on it, but it seems to
work for me. Raid 6 is raid 5 with Extra parity. I have built
a minimal drive with 4 160 mb hard drives and 100 percent redundancy. |
[Data 1][Data 2][Parity 1][Parity 2]
with this configuration I get the safety of being able to endure failure of ANY TWO drives. If I was using Mirroring:
[Data 1][Data 2][Mirror 1][Mirror 2]
I would not be able to endure a failure of (data 1 AND Mirror 1) OR (Data 2 AND Mirror 2).
With Raid 6 if a single drive is lost it behaves as a Raid 5.
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