The e-Business setup program installs an e-Business sample site (either the ASP.NET or CMS version (5.5.3 uses Sitefinity 8.01, 5.5.2 uses Sitefinity 7.1, 5.5.1 uses Sitefinity 6.0 SP1, and 5.5 uses Sitefinity 4.4), depending on your installation method) and the e-Business server components. You can choose to install either a sample site, server components or both. You can install the sample site on multiple Web servers but the e-Business server components can only be installed once (during the initial installation - if upgrading the database components for an existing e-Business installation, use the updater package to update the e-Business database components). See Installing the Server Components Only for instructions on how to install the e-Business server components only.
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