Re: Suboptimal raid6 linear read speed

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On 1/15/2013 8:58 PM, Peter Rabbitson wrote:
> On Tue, Jan 15, 2013 at 08:48:23PM -0600, Stan Hoeppner wrote:
>> With only 4 drives RAID6 doesn't make sense as RAID10 is superior in
>> every way.
> 
> Except raid6 can lose any random 2 drives, while raid10 can't.

This isn't a legitimate argument.  The probability of you being struck
by lightning is greater than two drives in the same mirror in a 4 drive
RAID10 dying before a rebuild completes.

I challenge you to do an exhaustive search for anyone, at any time in
history, who was managing the array properly, suffering such a two drive
failure and losing a RAID10 array, 4 drives or greater.  Note that
controller failures with all drives on one controller don't count, as
that failure mode will take down any array of any RAID level.

-- 
Stan

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