There are plenty of backup software packages out there, but Windows Home Sever with its consolidated image based backup technology allows you to quickly restore your entire system including programs, files and settings. Choose WHS because of its image based backup software and restore capabilities or for the file sharing and streaming media connections it creates within your networked home.
The Image-based backup software makes a snapshot or “disk image” of the computer’s entire hard drive and everything on it, including programs, settings and the operating system. An image-based backup can come in handy if, say, the computer’s hard drive completely dies, because the backup can be copied into a new hard drive, fully restoring the contents.” While the file-based backup “saves copies of files and data on the computer to an external hard disk, recordable disc or removable drive after someone tells it what files to backup.”
Source:→ WHS Blog