I'm sure the File Transfer Protocol can handle 20 petabyte file transfers. They're probably in 200GB tarballs or something most file systems can work with. But

I'm sure the File Transfer Protocol can handle 20 petabyte file transfers. They're probably in 200GB tarballs or something most file systems can work with. But even if you have 1 gigabyte per second upload and download, you might not want to wait the 2 years for the file transfer.