You should not propagate changes to your backup in a way that overwrites previous versions. Otherwise a ransomware attack will also destroy your backup. Your server should be allowed to only append the data for new versions without deleting old versions.
Also, if you're paranoid avout drive behavior, run ZFS. It will detect such problems and surface it at the OS level (ref "Zebras All The Way Down" by Bryan Cantrill)
Also, if you're paranoid avout drive behavior, run ZFS. It will detect such problems and surface it at the OS level (ref "Zebras All The Way Down" by Bryan Cantrill)