Creating fault-tolerant systems is a big goal of today"s Information Systems departments, and Microsoft"s new Clustering Server is one way to create systems that are online all the time. Windows NT Cluster Server Guidebook is all you need to begin designing and administering a system that takes advantage of this new technology. The beginning of this book explains clustering concepts and how Microsoft Cluster Server (MSCS) works. The author then looks carefully at the system requirements and details of designing and installing Cluster Server. (Currently, MSCS runs on top of Microsoft NT 4 Enterprise Edition for two hardware systems treated as a single unit, or "cluster.") The author provides numerous screen shots for all basic setup tasks, including how to set up fault-tolerant disk and network resources. Once your cluster is up and running, the author shows you how to monitor its performance. He includes dozens of "expert-mode" troubleshooting tips for common real-world problems. The author also devotes special chapters to using clustering with Microsoft SQL Server 6.5 (for databases) and Microsoft Exchange (for reliable mail delivery). --Richard Dragan