xCAT is a scalable distributed computing management and provisioning tool that provides a unified interface for hardware control, discovery, and OS diskful/diskfree deployment. xCAT has been deploying and managing large Linux systems since 1999. Many IBM customers and others have enjoyed its powerful customizable architecture long before other management solutions came into existence. Now xCAT 2 is open source on the xCAT sourceforge web site, so you can use it with confidence and participate in making it even better.