ExpressCluster X 3.1 for Linux Getting Started Guide - Nec

Chapter 2 Using ExpressClusterWhat is ExpressCluster?ExpressCluster is software that enhances availability and expandability of systems by a redundant(clustered) system configuration. The application services running on the active server areautomatically inherited to a standby server when an error occurs in the active server.ExpressCluster modulesExpressCluster consists of following three modules:ExpressCluster ServerA core component of ExpressCluster. Includes all high availability function of the server. Theserver function of the WebManager is also included.ExpressCluster X WebManager (WebManager)A tool to manage ExpressCluster operations. Uses a Web browser as a user interface. TheWebManager is installed in ExpressCluster Server, but it is distinguished from theExpressCluster Server because the WebManager is operated from the Web browser on themanagement PC.ExpressCluster X Builder (Builder)A tool for editing the cluster configuration data. The Builder also uses Web browser as a userinterface. The following two versions of Builder are provided: the offline version, which isinstalled on your terminal as software independent of ExpressCluster Server, and the onlineversion, which is opened by clicking the setup mode icon on the WebManager screen toolbaror Setup Mode on the View menu. The Builder needs to be installed separately from theExpressCluster Server on the machine where you use the Builder.30ExpressCluster X 3.1 for Linux Getting Started Guide