# What database is used for Elasticsearch

**URL:** <https://discuss.elastic.co/t/what-database-is-used-for-elasticsearch/134592>\
**Category:** Elasticsearch\
**Created:** [June 5, 2018, 10:52am UTC](https://discuss.elastic.co/t/what-database-is-used-for-elasticsearch/134592 "2018-06-05T10:52:11Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![kuba72](https://avatars.discourse-cdn.com/v4/letter/k/e47c2d/32.png) [@kuba72](https://discuss.elastic.co/u/kuba72)\
**Post date:** [June 5, 2018, 10:52am UTC](https://discuss.elastic.co/t/what-database-is-used-for-elasticsearch/134592/1 "2018-06-05T10:52:12Z")

</div>

Hi all,

An Elasticsearch cluster can contain multiple nodes. A node can have one or many Primary shards and replica shards. A shard is a Lucene index.

What database is used to store the actual data (documents)? Is it a database shipped with Lucene or is the database part of Elastic Search?

Thanks,  
Kurt

---

<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [June 5, 2018, 11:09am UTC](https://discuss.elastic.co/t/what-database-is-used-for-elasticsearch/134592/2 "2018-06-05T11:09:46Z")

</div>

It's stored as stored fields inside Lucene. (On disk that means).  
No database behind the scene.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 3, 2018, 11:09am UTC](https://discuss.elastic.co/t/what-database-is-used-for-elasticsearch/134592/3 "2018-07-03T11:09:59Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.