Larvitz 
I wrote up my entire backup strategy for my servers across FreeBSD and Linux:
- ZFS snapshots with sanoid
- Off-site replication via syncoid to rsync.net (encrypted at rest)
- Proxmox Backup Server fronting Backblaze B2 for VMs
- A Podman trick for backing up RHEL hosts without native packages
- Dead man's switch monitoring
- Quarterly restore tests recorded with asciinema
Real configs included.
https://blog.hofstede.it/my-multi-stage-backup-strategy-zfs-proxmox-and-paranoia/
mrsp