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The cross-cluster replication (CCR) feature enables replication of indices in remote clusters to a local cluster. This functionality can be used in some common production use cases:
- Disaster recovery in case a primary cluster fails. A secondary cluster can serve as a hot backup
- Geo-proximity so that reads can be served locally
- Prevent search load from interfering with indexing by offloading search to a secondary cluster
This guide provides an overview of cross-cluster replication: