I needed a database backup from a client so I connected to their archaic server.
I start transferring it from their machine to our FTP only to get a warning that it will take a while over their 56k modem.
I kept that going, but to be on the safe side, I also ordered a USB drive and shipped it to them. They put the backup on it and shipped it back to me.
The file transfer was still going when I received the USB in the mail.