# Migrating data to "cold" indexes - docs?

**URL:** <https://discuss.elastic.co/t/migrating-data-to-cold-indexes-docs/163078>\
**Category:** Elasticsearch\
**Created:** [January 6, 2019, 2:00pm UTC](https://discuss.elastic.co/t/migrating-data-to-cold-indexes-docs/163078 "2019-01-06T14:00:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ethrbunny](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ethrbunny/32/34603_2.png) [@ethrbunny](https://discuss.elastic.co/u/ethrbunny)\
**Post date:** [January 6, 2019, 2:00pm UTC](https://discuss.elastic.co/t/migrating-data-to-cold-indexes-docs/163078/1 "2019-01-06T14:00:43Z")

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Im looking for documentation about how to migrate old(er) data to "cold" storage. Specifically we use elastic to store audit data. This needs to be kept (nearly) indefinitely but certainly isn't accessed very often. There's no reason to keep this data in memory though.

It looks like "curator" is the tool to do this but Im not coming up with many examples of how it's done. We use curator to _delete_ older indexes.

Ultimately I would think we need to do two things:

- consolidate
- move to 'cold'

Can someone point me at info / docs on how to achieve these?

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [January 6, 2019, 10:30pm UTC](https://discuss.elastic.co/t/migrating-data-to-cold-indexes-docs/163078/2 "2019-01-06T22:30:31Z")

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The idea is the same as [this right here](https://www.elastic.co/blog/hot-warm-architecture-in-elasticsearch-5-x), but just add in another tier of nodes that you move data to.

We are putting more work into making this sort of long-term storage more efficient, I don't know the ETA for it though.

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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:** [February 3, 2019, 10:30pm UTC](https://discuss.elastic.co/t/migrating-data-to-cold-indexes-docs/163078/3 "2019-02-03T22:30:32Z")

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Closed on February 3, 2019, 10:30pm UTC

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