Re: Best practice for setting up "ordinary" RAID

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On Fri, 11 Oct 2013, Guillaume Betous wrote:

I would recommend setting this to 180 seconds.

Yes, and that's what I've done ! Not 30 seconds, but 3 minutes, you're right.
Sorry :)

RAID6, preferrably with a spare.

I'm not comfortable with RAID 6 setup. What is the minimal number of
hard drives for having a RAID 6 + spare ?

Well, I guess that would be 4, but that doesn't make much sense, then you could rather have just 3 drives in raid1.

But basically it's usually beneficial to have a RAID6 array over a RAID5+spare. I can't think of any "home use" usage patterns where RAID6 would perform a lot worse than RAID5. You get the benefit of allowing two drives to fail or a single drive failure plus read errors to be handled without problems.

I have completely stopped using RAID5 it's just not worth it when using large non-enterprise drives with 10^-14 read error rates.

What is it about RAID6 that you are not comfortable with?

--
Mikael Abrahamsson    email: swmike@xxxxxxxxx
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