There are many ways of how to ensure the availability of a MySQL Server and how to provide additional redundancy and fault-tolerance. In this talk, Lenz will give an overview over some best practices and commonly used HA setups for MySQL. The talk will cover the Open Source components and tools that are frequently utilized, with a focus on Linux and OpenSolaris. The session will also cover MySQL Cluster, the architecture and relationship to the MySQL Server. FOSDEM (Free and Open Source Development European Meeting) is a European event centered around Free and Open Source software development. It is aimed at developers and all interested in the Free and Open Source news in the world. Its goals are to enable developers to meet and to promote the awareness and use of free and open source software.