Backup of WD MY Cloud EX2 to Strato HiDrive

My Cloud OS 3 Personal & Network Attached Storage My Cloud EX2
1

Hi,

I would like to backup parts of the data on my NAS to an external cloud service (like Elephant or AmazonS3 ) named STRATO HiDrive. It is possible via several protocols like smb, ftp, rsync, sftp. How can I do this?

Thank you.