@girish Holy moly, this is why they charge less than other providers, cause they keep all the data around forever as the default. Thank you very much for helping me solve this third-party issue! Maybe this hint could be added to the backup docs. I made the settings according to your suggestion and will observe if it works. Thanks again!!

@girish Great! Thanks again for your help debugging this and adding more configuration. Huge help for larger backups like mine.

good points, thanks, gonna switch to cifs then!