This document contains these chapters:

• The High Availability Theoretical Basics chapter describes the fundamentals of highavailability solutions for readers who do not necessarily have an expertise in dependability. It presents the theory and basics and explains a method of conceptualizing series and parallel architectures, the two main possible system configurations. Calculation examples are used to illustrate this approach later in this document.
• The High Availability with EcoStruxure for Plant chapter provides a number of highavailability solutions.
• The Conclusion chapter summarizes the customer benefits provided by Schneider Electric’s high-availability solutions and provides additional information and reference materials.