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How often do you back up? (self.selfhosted)

submitted 11 months ago by InternetCitizen2 to c/selfhosted

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I was wondering how often does one choose to make and keep back ups. I know that “It depends on your business needs”, but that is rather vague and unsatisfying, so I was hoping to hear some heuristics from the community. Like say I had a workstation/desktop that is acting as a server at a shop (taking inventory / sales receipts) and would be using something like timeshift to keep snapshots. I feel like keeping two daily and a weekly would be alright for a store, since the two most recent would not be too old or something. I also feel like using the hourly snapshots would be too taxing on a CPU and might be using to much disk space.

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[–] [email protected] 2 points 11 months ago

IMO set up a good incremental backup system with deduplication and then back up everything at least once a day as a baseline. Anything that's especially valuable can be backed up more frequently, but the price/effort of backing up at least once a day should become trivial if everything is set up correctly.

If you feel like hourly snapshots would be worth it, but too resource-intensive, then maybe replacing them with local snapshots of the file system (which are basically free, if your OS/filesystem supports them) might be reasonable. Those obviously don't protect against hardware failure, but help against accidental deletion.