The Search Server is deployed to a specific web container instance which is defined by a <WebContainerProperties> element. Multiple Search servers can be specified by having multiple <SearchServer> elements within a <PortalConfiguration> section, each with a unique ID. A Portal may be associated with a specific search server by specifying the SearchServerID attribute within the <PortalServer> element.
<PortalConfiguration> <SearchServer SearchServerID="search1"> <WebContainerProperties . . . /> </SearchServer> <PortalServer SearchServerID="search1"> . . . </PortalServer> </PortalConfiguration>