Comment by solarengineer

It would appear that your comment is about ECC itself.

The way I explain ECC RAM and file systems is "Since data is present in RAM before it is given to a file system driver to store and after data is retrieved by the file system driver, the data is only as good as what the RAM can assure." ZFS handles everything once the data is in its purview. It provides various features to ensure redundancies and recoverability in case the underlying hardware fails for any reason.