Backup files and directories from some place in your computer to another place in the same computer or to a shared drive. Cobian Backup works as both an application and service. The program is very light on resources for a backup program of its size and runs in the background very discreetly. it makes periodic backups but unlike some programs, doesn't seem to slow down your PC in the process. It acts too quickly to really slow down whatever you are doing although if it has to backup a very big file, you will notice some lag (more than 1 GB). The program only copies your files and folders in their original or compressed mode to another destination and does not perform any compression itself. This is to ensure that nothing is corrupted during the backup process but if you are backing up particularly large files, you might find this something of a problem unless you've got lots of backup space. However, there are limited compression and strong encryption methods available if you need to reduce the size of your files and protect them at the same time