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All of my servers have shell scripts that rsync important stuff to a subdirectory. Other scripts run database dumps a couple of times a day.
My primary server at home then rsyncs my servers' backup subdirectories to its own, broken out by FQDN.
Leandra then uses Restic to back everything up (herself as well as the other servers' backups) to Backblaze B2 on a two year cycle.
@kat My devices are backed up to a nextcloud/NAS RAID in my home, which in turn is incrementally backed up via Duplicati (encrypted) to Wasabi cloud storage.
For the 14 pcs (~8 regularly used) in my house I'm running daily backups with Synology Active for Backup to a spinning disk DiskStation, file sync of the User directory using Synology Drive to an SSD DiskStation (also backed up to HDD DS). That data is all deduplicated. Then additionally I've got a few custom scripts to keep programs up to date using Chocolatey and winget which then export the list of installed programs ready to be reinstalled on a new machine.
This allows me to either do full device restores or clean installs where the reinstall of the relevant programs is handled automatically and then it's just setting up sync/backup/office activation and we're off to the races.
TIme Machine.
[dupe]