Comment by PaulKeeble

I have a home built NAS that uses ZFS for the storage array and the checksumming has been really quite useful in detecting and correcting bit rot. In the past I used MDADM and EXT over the top and that worked but it didn't defend against bit rot. I have considered BTRFS since it would get me the same checksumming without the rest of ZFS but its not considered reliable for systems with parity yet (although now I think it likely is more than reliable enough now).

I do occasionally use snapshots and the compression feature is handy on quite a lot of my data set but I don't use the user and group limitations or remote send and receive etc. ZFS does a lot more than I need but it also works really well and I wouldn't move away from a checksumming filesystem now.