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The initial maximum size of index cache (in kilobytes). The index cache stores data for indexing. Increasing the size of the cache can improve indexing performance. However, you must ensure than the host machine has sufficient available memory.
The index cache memory is allocated when the server starts, and retains this memory unless you change it. You can dynamically grow or shrink the indexing cache when HPE Content Component is running by using the DRERESIZEINDEXCACHE index action.