Used this to copy directories from my t14g2 laptop to my Synology office server:

❯ sudo rsync -aAXv / --exclude={"/dev/*","/proc/*","/sys/*","/tmp/*","/run/*","/mnt/*","/media/*","/lost+found","/.snapshots/*","/home/breaky/tower_data/","/home/breaky/copyparty/"} breaky@100.113.146.52:/volume1/bluewaves_archive/backups_computer/T14G2_1

You will be prompted to enter the sudo PW and then also the SSH PW to the synology 1 server as things are configured at present.