Originally posted by kebabbert
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The filesystem assumes that what is in RAM is always true, and this is an issue if a bitflip happens.
You can ignore the highly unlikely case of a fixed hardware fault being hit 2 times, the data was thrashed already by the first error.
2) ZFS does not need huge amounts of RAM. ZFS runs fine on a Raspberry Pie with 256MB RAM:
https://github.com/hughobrien/zfs-remote-mirror
https://github.com/hughobrien/zfs-remote-mirror
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