You could try/experiment with using rclone.
create a config for your desired mount, for example google drive.
Mount that via systemd and then point your backups to that location.
For example:
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[Unit] Description=rclone Service Google Drive Mount Wants=network-online.target After=network-online.target [Service] Type=notify Environment=RCLONE_CONFIG=/root/.config/rclone/rclone.conf RestartSec=5 ExecStart=/usr/bin/rclone mount google:cloudron /mnt/google \ # This is for allowing users other than the user running rclone access to the mount --allow-other \ # Dropbox is a polling remote so this value can be set very high and any changes are detected via polling. --dir-cache-time 9999h \ # Log file location --log-file /root/.config/rclone/logs/rclone-google.log \ # Set the log level --log-level INFO \ # This is setting the file permission on the mount to user and group have the same access and other can read --umask 002 \ # This sets up the remote control daemon so you can issue rc commands locally --rc \ # This is the default port it runs on --rc-addr 127.0.0.1:5574 \ # no-auth is used as no one else uses my server --rc-no-auth \ # The local disk used for caching --cache-dir=/cache/google \ # This is used for caching files to local disk for streaming --vfs-cache-mode full \ # This limits the cache size to the value below --vfs-cache-max-size 50G \ # Speed up the reading: Use fast (less accurate) fingerprints for change detection --vfs-fast-fingerprint \ # Wait before uploading --vfs-write-back 1m \ # This limits the age in the cache if the size is reached and it removes the oldest files first --vfs-cache-max-age 9999h \ # Disable HTTP2 #--disable-http2 \ # Set the tpslimit --tpslimit 12 \ # Set the tpslimit-burst --tpslimit-burst 0 ExecStop=/bin/fusermount3 -uz /mnt/google ExecStartPost=/usr/bin/rclone rc vfs/refresh recursive=true --url 127.0.0.1:5574 _async=true Restart=on-failure User=root Group=root [Install] WantedBy=multi-user.target # https://github.com/animosity22/homescripts/blob/master/systemd/rclone-drive.service