When creating a new date-stamped backup, Time Machine does not copy any files that have not been modified since the last backup. The same goes for entire folders; if all the files in a particular folder have not been modified, then the entire folder is not copied.
And yet there they all are. If you navigate into one of the "Leopard Demo" folders, you'll see every single file. Not aliases, not symlinks, the actual files: A Time Machine backup Complete disk contents in each backup
Well, sort of. In my Tiger review, I included an explanation of Unix file permissions. To understand what Time Machine is doing, you must first know something about another standard Unix feature: symbolic links and hard links. This is very basic stuff for anyone with Unix experience, but I got a lot of positive feedback about the Unix permissions tutorial so I hope you'll allow me a brief digression.
Link Posted by Tim at November 2, 2007 12:35 PM | TrackBack