This is what I used in terminal and worked:
rsync -avvvhW -e "ssh -p [port number]" [file or folder path] [user@ip_address]::NetBackup/
Now, I'm getting "permission denied" errors, in making new directories onto my NAS, for example, one of the errors:
rsync: recv_generator: mkdir "Downloads/Photos" (in NetBackup) failed: Permission denied (13)
*** Skipping any contents from this failed directory ***
and I double checked that the user, "rsync" has Read/Write permissions to NetBackup folder in the NAS, via user accounts.