Same question great answer:
And here I notice
ZFS mirror with two partitions on the same disk, safe?
I would like to create mirrored partitions on a single disk to protect against bit rot. I understand this will not protect against hardware failure. Seeing as ZFS is intended to work with drives, ...
askubuntu.com
This is certainly possible although not very efficient as the disk head will seek between both disk areas for all writes.
And here I notice
zfs get copies
still retains the SOURCE column but the setting is different than Solaris. 'default'ZFS protection against bit rot and silent corruption without RAIDZ
I have never encountered a disk failure in my whole life but I had a dozen of bit rot and silent corruptions. 'Normal' file systems and hardware RAID does absolutely nothing about it. I have been u...
serverfault.com
testing the resiliency of zfs set copies=n
www.openoid.net
On ZFS Copies
JRS Systems blogs about ZFS copies at http://jrs-s.net/2016/05/09/testing-copies-equals-n-resiliency/ I tried to reply there, but the w...
blog.richardelling.com