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TrueNAS or unRAID
(alien.top)
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.
unRAID is simpler and easier to manage than TrueNAS but requires a license:
unraid also lets you add drives of varying sizes to the array (as long as it's as big, or smaller, than the parity drive(s)). ZFS stuff doesn't really let you do that.