This IBM Redbooks publication will help you install, tailor and configure a highly available cluster of IBM Power servers utilizing Pacemaker, which is an open source cluster manager that supports Linux environments. We describe basic concepts required for planning and designing an infrastructure to meet the requirements for high availability and business continuity and we compare and contrast different options and tools. While the publication is mostly targeted at skilled professionals who are designing and installing highly available Linux environments, it starts with a basic understanding of the technology to help less technical readers understand the concepts.