Clonezilla is a partition and disk imaging/cloning program similar to True Image® or Norton Ghost®.
It helps you to do system deployment, bare metal backup and recovery. Clonezilla is suitable for single machine backup and restore.
Clonezilla saves and restores only used blocks in the hard disk. This increases the clone efficiency. With some high-end hardware in a 42-node cluster, a multicast restoring at rate 8 GB/min was reported.CloneZilla Hard Disk Partition Cloning and Backup software CD