Downloading from multiple ftp's at once.

I was working on a script to download a series of files from various ftp severs around our site. About 500 in total. My current script would login to a server, download the file, logout and repeat. But this would take a long time to complete. Is there any way of connecting to multiple ftp's at once? The file names are all the same, as is the username and password. Any ideas?

Split to 500 servers to couple sets and process each set in separate task in parallel.

Thanks, but I have no idea how to do any of that. I was hoping for some guidance.