@CBCUN any decent hoster can upload with a speed of 10MB/s so for a 600GB backup it should take 16-18 hours. My Cloudron backup is ~80GB TGZ and it takes 35-45 minutes to backup from a Netcup RS to a Hetzner storage box. Either your source/target system is slow as hell or something else is bottlenecking. What method do you use? I found TGZ to be way faster because of the many many small files. If you have larger files, maybe RSYNC is the way to go. A good solution would be a (maybe self hosted) S3 Storage together with RSYNC. I use Minio for one of my backup instances and the backup from Cloudron is blazing fast as most of the work is done by the target machine.
