this post was submitted on 19 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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How much space do you need? Number of disks is irrelevant until you know your storage needs. If it can fit under 20TB then just buy two of the same size disks and create a backup on a regular basis.
Fewer disks means less complexity, less power, fewer points of failure, and typically less cost than buying multiple smaller disks to reach the same capacity.
If you want your data to be safe, then have at least one backup, preferably two.