FTP Attachments® supports file sizes of up to 1.98 GB for certain Storage servers like Local, FTP, SFTP. Please note this large file support can be limited by your network bandwidth and other hardware resources like server RAM, Hard disk speed/throughput, CPU. We verified FTP Attachments® to reliably support file sizes up to 1.98 GB for the configuration of 2GB, 2 GHZ, Windows 2003 server for Concurrent 3 users.