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A blog post detailing a 'backup of last resort' strategy using sealed Blu-ray M-Disc cases held with trusted friends, covering what data to preserve, hardware choices, and rotation protocols for long-term disaster recovery.
M-DISC is a write-once optical disc technology introduced in 2009 by Millenniata, designed for archival storage with claims of up to 1000 years of longevity. The discs use a glassy carbon data layer and are compatible with standard DVD and Blu-ray formats.