To be 100% honest, I was going off the fedora mirroring tutorial, And Was mistaken, It states this.
Redirecting ISO downloads to FTP

Apache 2.x and earlier can't distribute files larger than 2GB. This means DVD images won't work. (lighttpd doesn't have this limitation). Also, some people find FTP to be more efficient than HTTP for really large files like ISO images. These Rewrite lines will redirect all HTTP GET requests for *.iso files to a different FTP daemon. With this method, HEAD requests used by the MirrorManager crawler for *.iso files aren't rewritten, which gives better crawling results.




On 11/25/2009 10:00 PM, H. Peter Anvin wrote: 
On 11/25/2009 03:19 PM, Nick Olsen wrote:
  
A lot of mirrors do this anyways. ISO's are big files, HTTP wasn't made
to move big files. Most people do this just so the user has a better
chance of the download completing successfully.
    
What makes you say that http was not made to move big files?  There is
absolutely nothing about http which makes it unsuitable for large files.

I would personally consider a mirror redirecting http traffic to ftp to
be broken.  It's at the very best rude for people behind firewalls.

	-hpa