Microsoft’s backup options are changing in Windows 8.
The developer preview of Windows 8 includes a File History feature that was previously known as “History Vault” during the early Milestone builds of Windows 8. File History will allow Windows 8 users to backup their library, desktop, contacts and favorites. The interface includes advanced settings and the ability to exclude folders from a backup. Windows 8 users will need a separate partition, HDD, external HDD or network drive to take advantage of the new backup.

Windows 8 - file history