rsync usually will speed up the upgrading of iso files from one to another. Since the test iso does'nt change their name here is a small script to help the community. #!/bin/sh rsync -av --progress --partial --stats sunsite.mff.cuni.cz::ftp/OS/Linux/Dist/Fedora.RC/3/i386/iso/FC3-i386-disc* /directory of isos the rsync line here is smart wrapped and should be on one line in your command or bash script file. here is my output of this command which is saved as the file "iso" sh iso SunSITE.MFF.CUni.CZ 2TB archive receiving file list ... 4 files to consider FC3-i386-disc1.iso 647069696 100% 628.29kB/s 0:16:45 (1, 25.0% of 4) FC3-i386-disc2.iso 668514304 100% 1.25MB/s 0:08:31 (2, 50.0% of 4) FC3-i386-disc3.iso 667525120 100% 1016.03kB/s 0:10:41 (3, 75.0% of 4) FC3-i386-disc4.iso 398049280 100% 884.90kB/s 0:07:19 (4, 100.0% of 4) Number of files: 4 Number of files transferred: 4 Total file size: 2381158400 bytes Total transferred file size: 2381158400 bytes Literal data: 371155464 bytes Matched data: 2010002936 bytes File list size: 101 Total bytes sent: 583981 Total bytes received: 371529134 sent 583981 bytes received 371529134 bytes 136130.64 bytes/sec total size is 2381158400 speedup is 6.40