alt Hacker NewsA NAS is at risk from malware that can erase all of it. 100GB Bluray discs exist and work more easily for archival storage, as does multi-terabyte tape drive storage, both of which can stay disconnected At least two offline copies, combined with error correction codes, are advised. A cloud backup is also advised.
It's really too bad the disc based storage options made after Blu-ray were discontinued. They made a lot of progress and seem a lot more user friendly than tape.