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netbsd and RAID and UCR errors on large drives
I'm wondering about the algorithm that is implemented in netbsd.
I believe that the most common errors for large drives are single read
those errors should be (IMHO) recoverable in a raid set by re-writing
the failing blocks
from a working drive.
Discussions suggest, that the non decreasing error rate for drives, will
cause in a couple of years (assuming constant capacity increase),
a guaranteed UCR while rebuilding a raid system, so the suggestion is to
use RAID6 to allow for that.
As I said above some drive failures should be avoidable w/o raid6 and
I'm wondering if
netbsd does (or will) implement such a single block recovery ?
Is there another interface into the smart error list than smartctl ?
Anyone knows about that?
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