An index belongs to an index area, and an index area belongs to an object store. A server accesses indexes only for object stores that belong to the same FileNet P8 site as the server.
An index file can be accessed by only one index server at a time. Content Platform Engine assigns indexes to the available index servers so that the work load is roughly the same for all servers. If an index area belongs to an affinity group, the indexes in that area are assigned to servers that belong to the same group.
When a CBR query is submitted, Content Platform Engine selects a search server to run the full-text search for the query. (A full-text search expression is specified as part of the CONTAINS function call in the CBR query.) The default search server selected is the dual-mode server that most recently updated the index that is relevant for the full-text search. The default server might not be eligible to run the search for the following reasons:
If the default server is not eligible to run the search, Content Platform Engine assigns the search request to a randomly selected available search server. The random selection is repeated if the selected search server crashes while running the search.