From Mac Guides
Time Machine logo at WWDC 2006
is a feature of
Mac OS X 10.5 (Leopard) that allows for automatic backups when files are modified. In addition, it allows older versions of a file to be restored by entering a date or time. This is integrated into
Finder by using a timeline to move through the history of the disk,
Spotlight to perform searches on documents in the past,
iPhoto to find deleted photos, among others.
Time Machine can back up to a hard drive or server.
The importance of backup was emphasized when Time Machine was announced at WWDC 2006, when Steve Jobs revealed that only 26% of users performed a backup of some kind, while just 4% performed an automatic backup.
Links
Time Machine information at apple.com
