On Mon, 1 Nov 2021 08:11:54 -0400 Hendrik Boom <hend...@topoi.pooq.com> wrote:
> Yet these files are also working files, are kept online, and > legitinately need to be modified from time to time. > My present method is to keep everything on my server, and make > regular backups. My first suggestion is to decide why you're keeping everything together. Perhaps there needs to be a separation between Convenience; everything in one place (and subject to the same procedures, benefits and flaws) Confidence; some things subject to enhanced archival techniques or media, such as using M-DISC [1] Perhaps there does not need to be a separation. Maybe the effort is too high or the reward is not great enough. Make this decision. Maybe unchanging media, such as your media archives (photographs, video, poetry) can be on M-DISC locally, with a second copy offsite. Thinking about M-DISC and changes, it makes me wonder if multi-track / multi-session technology [2] is available to them. This would allow the appending of data to either add more files, or "modify" existing files (versioning in a sense). > Currently I use rdiff-backup, which does have the ablity to keep > older as well as newer versions of files on the same backup drive. Does rdiff-backup have the ability to keep older versions on different storage? If so, you could shunt those data to a more reliable medium. It would also save you space for your "live" data, giving some side-benefits like reduced cost. > Now storage media deteriorate over time. > > It is necessary to read and transfer data from old media to new from > time to time. If these things can be solved or made less difficult, it would help alleviate a lot of pressure on the rest of your backups. This is why I suggested M-DISC [1] - As for your other thoughts, I have no experience. Regarding filesystems, I think it was ZFS that you mean. [3] ---- 1. https://en.wikipedia.org/wiki/M-DISC 2. Regarding multi-session, I'm unfamiliar with it but see: "Red Book" (1980), regarding CD-ROMs in general https://en.wikipedia.org/wiki/Rainbow_Books "Blue Book" (1995), regarding E-CD/CD+/CD Extra (Enhanced) https://en.wikipedia.org/wiki/Blue_Book_(CD_standard) https://en.wikipedia.org/wiki/Enhanced_CD Is multi-session obscure knowledge? Maybe USB storage rose to prominence at about the same time. 3. https://openzfs.github.io/openzfs-docs/Basic%20Concepts/Checksums.html _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
