# Elasticsearch cluster best practices - memory utilization

**URL:** <https://discuss.elastic.co/t/elasticsearch-cluster-best-practices-memory-utilization/61305>\
**Category:** Elasticsearch\
**Created:** [September 22, 2016, 7:18pm UTC](https://discuss.elastic.co/t/elasticsearch-cluster-best-practices-memory-utilization/61305 "2016-09-22T19:18:28Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![piyush](https://avatars.discourse-cdn.com/v4/letter/p/ecb155/32.png) [@piyush](https://discuss.elastic.co/u/piyush)\
**Post date:** [September 22, 2016, 7:18pm UTC](https://discuss.elastic.co/t/elasticsearch-cluster-best-practices-memory-utilization/61305/1 "2016-09-22T19:18:28Z")

</div>

Hi Team,  
I setup an ELK environment and next week we are allowing it for production usage. But i am worried about elasticsearch nodes memory utilization. Please suggest how can i improvise ES performance, memory usage and what are the best practices i should follow before go to production. Though i read online documentation but looking for precise ones.

i tried manipulating filedata but if i reduce it, it's not showing all instances data in the dashboard. i want to keep at-least 3 weeks of data.

indices.fielddata.cache.size: 40%

shall i use 4 high memory instances or 8 low memory instance? which will improvise ES performance?

PFB details about my setup:

1. 6 nodes of Elasticsearch, 1-master,1-client and 4-data nodes

2. Currently i setup beats on almost 15 instances and they are sending data to ES, moreover some log files.

3. ES memory utilization graph and marvel snapshot is attached herewith.

 ![](https://us1.discourse-cdn.com/elastic/original/2X/0/0c50a8681b220363d0412340f3d1826c9c0e4b85.JPG)

![](https://us1.discourse-cdn.com/elastic/original/2X/6/6f07ffb83fa81091c3135887d43740b70310c276.JPG)

Please let me know if you need more details, mostly properties are default.

Thanks & Regards

---

<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 5, 2017, 10:18pm UTC](https://discuss.elastic.co/t/elasticsearch-cluster-best-practices-memory-utilization/61305/2 "2017-07-05T22:18:01Z")

</div>