this post was submitted on 09 Nov 2023
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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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Draid mitigates a lot of the problems of very wide raidz
https://openzfs.github.io/openzfs-docs/Basic%20Concepts/dRAID%20Howto.html
Draid removes the capability of variable stripe widths, however. Strongly recommend a special metadata device when doing draid with the same level of redundancy as the rest of the pool.
If you have lots of small files, yes this is bad.
For videos the space lost will just be a rounding loss.
Would be interesting to test for music. A 100k 20mbyte files. You could lose a lot of space if using 1 mbyte+ stripes that have been recommended for a while now.