I wrote before about backups. https://www.familie-kleinman.nl/brain/index.php/2025/04/12/backup-stories-what-was-needed-to-get-to-never-again/ . Backups are the last line of defense. If everything else fails, you fall back on them. But that raises the question: what’s the first line of defense, and what can you build in between? Having your data on multiple hard drives, in RAID, is such a defense. One…