Clonezilla is an open source solution to computer backup, restoration and "ghosting". It is based on partition imaging and allows you to backup and recover your system should it be taken out by a virus or a hard drive crash. Two types are available, the Clonezilla Server Edition (SE) and Clonezilla Live.
Clonezilla Live is intended for use with a single computer while Clonezilla SE can clone more than forty computers at once and is suitable for use in an office setting where many users share a server. Both versions are very efficient due to the fact that they restore and save only those blocks in the hard disk that are actually used. And both versions are surprisingly quick; the SE version can clone a 5.6 GB system to forty computers via multicasting in only ten minutes.
Since both versions of Clonezilla support many types of file systems, they can clone MS Windows, Linux and Mac operating systems. The SE version uses multicast to restore many computers at once as well as having the ability to remotely do the same thing if Wake-on-LAN and PXE are supported. In addition, this free software can restore or save an entire disk, not just partitions.
Whether you have just one computer or you're IT support for a company with several dozen on a network, Clonezilla is an easy to use and cost effective solution to backup and recovery.