# ELK-Stack Requirements

**URL:** <https://discuss.elastic.co/t/elk-stack-requirements/147427>\
**Category:** Elasticsearch\
**Created:** [September 5, 2018, 2:45pm UTC](https://discuss.elastic.co/t/elk-stack-requirements/147427 "2018-09-05T14:45:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![atom](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/atom/32/34758_2.png) [@atom](https://discuss.elastic.co/u/atom)\
**Post date:** [September 5, 2018, 2:45pm UTC](https://discuss.elastic.co/t/elk-stack-requirements/147427/1 "2018-09-05T14:45:01Z")

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Hi,  
i am running a single elasticsearch host with nearly 1 billion documents (apache logs) in it 🙂

All documents are stored in different indices that are rotated daily: a\_log-YEAR.MONTH.DAY

I do close all unused indices and open them if i need 'em.

I have some large Kibana visualizations where Elasticsearch needs to filter and count a lot Data.  
Sometimes Elasticsearch crashes. The service is running on a hypervisor with 4 cores and 25gb ram.

How much RAM do i need to handle so many documents. And how many nodes should i add? (to my single on 😃 )

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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:** [October 3, 2018, 2:45pm UTC](https://discuss.elastic.co/t/elk-stack-requirements/147427/2 "2018-10-03T14:45:17Z")

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