Rsync as you know is known for its ability to sync files incrementally - backing up only the changes. However, this is not the behavior I have noticed while testing my Rsync setup.
It appears that Rsync is continuing to backup and replace each and every file each time I run the utility. I know this because the files in my destination folder are continually updating their modification time stamp each time I run rsync. I have also used the --progress option to catch Rsync taking its sweet time to copy the same files that have already been "synced" to the source folder.
Is there a special way to run Rsync so it does what is supposed to do?