# Elastic Stack 6.5 cross cluster replication

**URL:** <https://discuss.elastic.co/t/elastic-stack-6-5-cross-cluster-replication/156958>\
**Category:** Elasticsearch\
**Created:** [November 16, 2018, 1:11am UTC](https://discuss.elastic.co/t/elastic-stack-6-5-cross-cluster-replication/156958 "2018-11-16T01:11:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![shradhatx](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/shradhatx/32/45398_2.png) [@shradhatx](https://discuss.elastic.co/u/shradhatx)\
**Post date:** [November 16, 2018, 1:11am UTC](https://discuss.elastic.co/t/elastic-stack-6-5-cross-cluster-replication/156958/1 "2018-11-16T01:11:54Z")

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Can someone explain what happens under the hood? Is it reindex from remote or something else?

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**Author:** ![mvg](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mvg/32/98890_2.png) [@mvg](https://discuss.elastic.co/u/mvg)\
**Post date:** [November 16, 2018, 1:04pm UTC](https://discuss.elastic.co/t/elastic-stack-6-5-cross-cluster-replication/156958/2 "2018-11-16T13:04:08Z")

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Cross cluster replication is not using reindex from remote. This page described in a general way how CCR works: [https://www.elastic.co/guide/en/elastic-stack-overview/6.5/ccr-overview.html#\_the\_mechanics\_of\_replication](https://www.elastic.co/guide/en/elastic-stack-overview/6.5/ccr-overview.html#_the_mechanics_of_replication)

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 14, 2018, 1:04pm UTC](https://discuss.elastic.co/t/elastic-stack-6-5-cross-cluster-replication/156958/3 "2018-12-14T13:04:20Z")

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