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This redbook provides you with the information you need to understand howto plan, design, install, configure, and manage Lotus Domino clusters.Domino is a leading groupware application that provides collaborativeworkgroup tools such as e-mail, database access and calendar management.These functions have become critical for the day-to-day operations of manycompanies. For such businesses, downtime, that is, loss of one or more ofthese tools due to server or software failure, can have a significant impact onbusiness results.
One way to manage the risk of downtime is to implement clustered systems.Clusters are groups of servers treated as a single computing resource thatprovides services to network users. When a server in the cluster fails, itsworkload is passed to one or more other members of the cluster untilcorrective action is taken and the failed server can be brought back intooperation again.
In contrast with other clustering technologies, such as Microsoft ClusterServices, Domino provides its own unique clustering technology that isindependent of the underlying operating system. This means that a singlecluster can comprise servers running a variety of the operating systemssupported by Domino, from OS/390, to AIX, to Windows 2000.
The book focuses on IBM's family of Netfinity servers as the hardwareplatform of choice. Netfinity servers are Intel-based, industry-standardservers that offer a number of innovative features to provide a stable andreliable platform for business-critical computing. In this book, MicrosoftWindows 2000 is often used as the operating system chosen to illustrateparticular facets of Domino clustering beingconsidered, but Linux is alsoused as an alternative and to demonstrate the operating system-independentnature of Domino clusters.
We assume the reader is familiar with Domino operation and terminology.