On Tue, 29 Jan 2019 23:15:18 +0000
Hans van Kranenburg <[email protected]> wrote:

> So, what I was thinking of is:
> 
> * Use dm-integrity on partitions on the individual disks
> * Use mdadm RAID10 on top (which is then able to repair bitrot)
> * Use LVM on top
> * Etc...

You never explicitly say what's the whole idea, what are you protecting
against. By mentions of bitrot and of dm-integrity, you seem to think that
when hardware is "starting to fall apart" the disks will eventually start
returning wrong/corrupt data.

Thing is, they do not. What you will get on disks going bad is uncorrectable
read errors (UNC), not a silent corruption. The latter is still possible, but
more likely to be caused by the SATA controller issues (or its
driver/firmware), not disks. And those are hardly related to whether it's
"new" or "old".

-- 
With respect,
Roman

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