The best way is to just backup to multiple locations and actively manage it. RAID at the backup destination is nice because it means that if a disk fails, you don’t immediately lose everything there. But if you have multiple places where that data lives then it’s not the end of the world to just re-create the backup.
If you want to get into true archival solutions(way more expensive than setting up a RAID) then you’re looking at things like M-Disc and LTO tape
The best way is to just backup to multiple locations and actively manage it. RAID at the backup destination is nice because it means that if a disk fails, you don’t immediately lose everything there. But if you have multiple places where that data lives then it’s not the end of the world to just re-create the backup.
If you want to get into true archival solutions(way more expensive than setting up a RAID) then you’re looking at things like M-Disc and LTO tape