As you say, RAID (specifically RAID level 1) is redundancy. Time Machine is a form of generational/chronological backup. Apple has stated that Time Machine is

As you say, RAID (specifically RAID level 1) is redundancy. Time Machine is a form of generational/chronological backup. Apple has stated that Time Machine is not archival. I wonder is this new patent is referring to an extension of TM, to the cloud, to provide something as close to archival as can be achieved.