Ive been looking for a program that would Conform a backup drive to whatever exists on the source drive. That means Copy new files to the destination, Update changed files on the destination, and Delete files on the destination that no longer exist on the source. This program does that fast and accurately.
The Problem: I have over 400 GB of Final Cut Pro X events and projects in a folder Movies. Every time I add events or projects, or change events of projects, my backup drive is no longer the same as the source. If I use Time Machine, it doesnt delete the old files from the backup that have been deleted/changed on the source, so pretty soon my 400 GB of source files is close to a Terabyte on Time Machine.
With SyncTime I can make the backup directory be the same size with the exact same files. This doesnt protect me if I screw up and make wrong deletes/changes on the source and then sync, but the tradeoff is worth it.
The FileSync program has other options, such as adding new/changed files but not deleting old ones on the destination. I dont use this, but I can see that it could be handy for some.
Note: This program is integrated with Finder, which was initially confusing. When you start it, you get a dialogue box to create multiple syncs, but the menu bar at the top of the screen says Finder and not FileSync.