# How to split an existing large index into many smaller ones?

**URL:** <https://discuss.elastic.co/t/how-to-split-an-existing-large-index-into-many-smaller-ones/190731>\
**Category:** Elasticsearch\
**Created:** [July 16, 2019, 12:09pm UTC](https://discuss.elastic.co/t/how-to-split-an-existing-large-index-into-many-smaller-ones/190731 "2019-07-16T12:09:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Havana](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/havana/32/47091_2.png) [@Havana](https://discuss.elastic.co/u/Havana)\
**Post date:** [July 16, 2019, 12:09pm UTC](https://discuss.elastic.co/t/how-to-split-an-existing-large-index-into-many-smaller-ones/190731/1 "2019-07-16T12:09:55Z")

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Hi,  
We have a very large index(70GB+) and would like to split it into smaller ones based on the date field.  
More specifically, we could have an index for each week and in each small index, documents are created within the same week.  
How could I do this with kibana?  
Thanks for your kind reply.

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<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:** [August 13, 2019, 12:23pm UTC](https://discuss.elastic.co/t/how-to-split-an-existing-large-index-into-many-smaller-ones/190731/2 "2019-08-13T12:23:26Z")

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