On Wed, 13 Dec 2017 15:29:54 +0100
cagsm <cumandgets0mem00f(a)gmail.com> wrote:
speaking about software raid, not hardware controller based.
I am trying to go for some local OpenSuse machine and adding some
storage to it. Was considering Raid6, and now reading about a bit and
people left and right scaremongering about the larger the disks these
days in the double digit terabyte capacities even, the more likely it
is that during a reconstruction of a raid subsequent errors would
I would absolutely like to keep my data consistent, and I am not
thinking about double digit terabytes either, would stick to 2TB or
4TB disks, with Raid6 thats at least 4 physical drives.
Now I am wondering if it possible to use a good robust file system
that can add some more parity or check blocks or redundancy on top of
the hardware disks, to absolutely be able to always read my data.
I would also recommend RAID 10 as an alternative. The key with RAID 6,
or any RAID really, is to regularly scan read the disks so errors are
found and corrected as soon as possible and so disk failures don't
appear in bunches. Also buy disks from different batches.
As regards filesystems, I would choose XFS for integrity.
Of course the other main insurance is to keep separate backups offline!
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