You can sync your Proxmox Backup Server to our Proxmox Backup Service. We will pull your backups every hour, so no large chunks will be transferred. You can't push.
You need to provide the following information? (Only for paid accounts)
1. a user (or API key) with DatastoreReader permissions on the datastore to be synchronized.
2. hostname of the PBS server.
3. If this server is provided with a self signed certificate, we also need the fingerprint.
4. We create a separate datastore where we create a sync job, this sync job runs 1x a day.