this post was submitted on 23 Nov 2023
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Data Hoarder
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We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
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This is why you ALWAYS need INDEPENDENT backups. You can think all day long about detecting bitrot, and how well you're protected against X drive failures but then something comes from the side and messes up your data in a different way than you've foreseen.
This happened to me years ago. Naïvely thinking SnapRAID protected me against the likelihood of a drive failure. I wasn't prepared for two drives failing simultaneously due to a power supply catastrophically failing (smoke, sparks) and frying the drives as it died.
It was an expensive lesson: I had to send one drive off for data recovery, and after I got it back I used SnapRAID to restore the remaining drive. Independent backups (and multiple parity drives) is the way.