Hi. Does someone have a good understanding of what the various backup options are? I have dedicated the 500 gig unit as my media storage device and I have attached an external 500 gig usb unit to it. Formated it as XFS and started a Normal Backup. More than 30 hours later it's almost done. It looks like it simply copied the files over which is perfect, that's all I want. A bit disappointed about the speed though. Now there are a few options of "overwrite" backups and I have trouble figuring out which is best to pick. I would like to have this unit backup weekly but only the changed files (synchronize). Would Overwrite backup (Complete/Differential) work. Would that add the new files, modify the changed files and delete the files that no longer exist? I hope someone has experimented with this cause at these speeds it might take a while to find out.