I have tried to use ftp to upload files to main.g2.bx.psu.edu but the jobs have been failing with:

421 service not available, remote server has closed connection

after about 1.5GB.

Isn't ftp the way you are supposed to upload large files? The file I am uploading is ~6GB in size.

Gábor Bartha, Ph.D. Director of Information Sciences Synergenics, LLC 863 Mitten Rd., Suite 101 Burlingame, CA 94010 650-777-5202