How do I back up data from a Linux device to my Synology NAS via rsync?
https://kb.synology.com/en-us/DSM/tutorial/How_to_back_up_Linux_computer_to_Synology_NAS
https://www.wundertech.net/use-ssh-keys-to-automatically-backup-a-linux-pc-to-a-synology-nas/
