In the past couple of days the internet has been buzzing with news about Apple’s new operating system “Mac OS X Lion” we have already discussed many of the new features, however recently several sites have posted about the changes to Time Machine. Apple has added the so-called “Local Snapshots” which allows you to use the helpful Time Machine backup feature without an external hard drive and instead makes a local snapshot of all file changes. Your Mac will take these local snapshots every hour and store them on your Mac’s internal hard disk.
While Apple warns that Time Machine should really be used with an external hard drive, as its true purpose is to protect your files when your local disk malfunctions, we still see the local snapshots feature as important if you lose a file while on the go, and we presume it works hand-in-hand with the new “Versions” feature in Lion, which allows you to view the evolution of your documents.
If you go for a certain time without being connected to your external hard drive, once you connect your computer will copy all of the local snapshots as backups onto that external drive.