But what if the NAS goes offline? Heck, even if the storage drives and the underlying OS can be restored using some tech ...

Losing important computer data can be a nightmare. Whether due to hardware failure, accidental deletion, software corruption, or theft, data loss can disrupt your work and personal life. Regularly ...

And of course the original file needs to be available for the checksum in the first place-- you may have backed it up and then deleted/purged it! You could also take each backup three separate times ...