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Encrypted backups to the cloud
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this post was submitted on 25 Feb 2025
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I use Borgbackup, with borgmatic to configure and periodically run it. I have two storage VPSes "in the cloud", and back up to both of them. My main storage VPS is a HostHatch one with 10TB space for $10/month. I got it during Black Friday sales in 2021.
If you do back up to multiple destinations, Borgbackup's devs recommend configuring two separate backups, rather than doing a backup to one server then syncing it to the second one. This is to handle the case where one of the backups becomes corrupted.
Hetzner have decent deals on their "storage boxes". You don't get root access, but they support Borgbackup, restic and rclone in addition to the regular protocols (SFTP, FTPS, WebDAV, SMB).
Make sure you configure the SSH key to only allow it to run borgbackup in "append only" mode, so that malware/ransomware on the client system can't delete the backups. This is a common issue with other backup solutions like rsync - the client has full access to the server, so a malicious user/code could delete the whole backup.