Techniques and mechanisms are disclosed to increase the availability of summary data within a clustered data intake and query system by replicating the summary data within the cluster. In general, summary data may store “pre-computed” results for one or more search queries and can be used by indexers of a cluster to process subsequent instances of the same search queries. At a high level, replication of summary data within a cluster may include ensuring that each instance of summary data created by an indexer of a cluster is replicated to other indexers within the cluster that store copies of the same grouped subset(s) of data to which the summary data relates. In this manner, if one or more indexers of an indexer cluster fail, other indexers of the cluster can make immediate use of replicated copies of the summary data without re-creating it.