# Index Memory issue

**URL:** <https://discuss.elastic.co/t/index-memory-issue/244976>\
**Category:** Elasticsearch\
**Created:** [August 14, 2020, 8:54am UTC](https://discuss.elastic.co/t/index-memory-issue/244976 "2020-08-14T08:54:14Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![KrishK](https://avatars.discourse-cdn.com/v4/letter/k/c89c15/32.png) [@KrishK](https://discuss.elastic.co/u/KrishK)\
**Post date:** [August 14, 2020, 8:54am UTC](https://discuss.elastic.co/t/index-memory-issue/244976/1 "2020-08-14T08:54:14Z")

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Hi Support,

I checked with one of the elastic testing servers, I found some index memory difference.

SS from the testing server - Heap Size: 3GB[HDD 2TB]

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/b/6/b6bf61b7e2fb73b3a3b319bca282c6b706df7457.png)

SS from PROD server – Heap Size:30GB [2TB]

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/a/8/a83c0b581c664d49bc40e63af42ca5503e490d15.png)

Is there any configuration required to change? Can anyone help me with this?

Thanks

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**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\
**Post date:** [August 14, 2020, 10:38am UTC](https://discuss.elastic.co/t/index-memory-issue/244976/2 "2020-08-14T10:38:10Z")

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This post lacks quite a bit of details, like the Elasticsearch version being used, how much data is on that node/cluster etc. Please provide some more context. Especially the Elasticsearch version is important due to changes in Elasticsearch 7.7, see [https://www.elastic.co/blog/significantly-decrease-your-elasticsearch-heap-memory-usage](https://www.elastic.co/blog/significantly-decrease-your-elasticsearch-heap-memory-usage)

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<div class="post-metadata">

**Author:** ![KrishK](https://avatars.discourse-cdn.com/v4/letter/k/c89c15/32.png) [@KrishK](https://discuss.elastic.co/u/KrishK)\
**Post date:** [August 14, 2020, 10:42am UTC](https://discuss.elastic.co/t/index-memory-issue/244976/3 "2020-08-14T10:42:31Z")

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Thanks for the reply,

Below is the detail of the production server.

OS: Ubuntu 18.04  
RAM: 60GB(50% occupied Elastic)  
Disc : 2TB  
Processor: 4 Core

Elastic Configuration: ELK - 7.7.X

We have 450 million records on production and index created with below mapping and settings.

Index shards: 25 and Replica Shard : 0  
Index size : 890GB

Thanks

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<div class="post-metadata">

**Author:** ![KrishK](https://avatars.discourse-cdn.com/v4/letter/k/c89c15/32.png) [@KrishK](https://discuss.elastic.co/u/KrishK)\
**Post date:** [August 17, 2020, 5:13am UTC](https://discuss.elastic.co/t/index-memory-issue/244976/4 "2020-08-17T05:13:22Z")

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Hi Alexander Reelsen,

Any update on this?

Thanks

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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:** [September 14, 2020, 5:13am UTC](https://discuss.elastic.co/t/index-memory-issue/244976/5 "2020-09-14T05:13:42Z")

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Closed on September 14, 2020, 5:13am UTC

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