I use SyncBack to backup various directories from my server to external USB drives, some are whole backups to store in a different location, some are partial backups when I need to take certain data with me travelling. This all works well, but I notice that there s usually a big chunk of files that have the time shifted by one hour, this means that SyncBack the re-copies them slowing down the process.
These files shouldn't have been edited or moved so I'm a bit mystified as to why the time change. It sometime means that backing up a couple of hundred files can take all night as there are thousands of 'changed files' to copy too.
I can get SyncBack to ignore file time changes of 1 hour 1 minute - that cures the problem, however that seems like a work around. I'd like to get to the bottom of why the times are changing.