Hi all, i'm not sure if you faced the same problem but i have the same question for some time, especially when i start dealing with large files. So the problem is this : All software programs when they do incremental file backup they store the files that were changed from the last full backup BUT if you have 1 large file that was modified they will not go and store the exact modifications of the file but store it again as a whole file. This is a serious issue if this file is several GB Even for Acronis True Image 2011 (i don't know for 2012), Acronis employees admitted that if someone wants to do file storage that way he should select partition backup and exclude the directories he's not interested to store. What i seek is a windows software that will not store the whole file but only the fractions of the file that were changed since the full backup was taken. Any ideas or straight leads to a software ?