# Elastic Search - index number and size limitations

**URL:** <https://discuss.elastic.co/t/elastic-search-index-number-and-size-limitations/119056>\
**Category:** Elasticsearch\
**Created:** [February 8, 2018, 1:44pm UTC](https://discuss.elastic.co/t/elastic-search-index-number-and-size-limitations/119056 "2018-02-08T13:44:39Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![yoavsradware](https://avatars.discourse-cdn.com/v4/letter/y/e9c0ed/32.png) [@yoavsradware](https://discuss.elastic.co/u/yoavsradware)\
**Post date:** [February 8, 2018, 1:44pm UTC](https://discuss.elastic.co/t/elastic-search-index-number-and-size-limitations/119056/1 "2018-02-08T13:44:40Z")

</div>

Hi all ,  
I have an application which is based ELK as for today I saving 2.5 Giga per daily index , my requirements are to save it 3 months in the past , each contain 8,640,000 documents

now I am taking this application and migrate it to another application with running ES I would like to reduce the number of indexs from daily to weekly  
meaning  
Daily storage: 2.5Giga and 8,640,000  
to  
weekly storage: 17.5Giga and 60,480,000

1.will be there a problem ?  
2.does reducing the number of indexes is the right way (this solution is on prem so adding cluster with lots of macchines and sharding the documents between them should be the last option )  
3.are there knowen limition when I am working with one instance regarding :  
a. number of indexes  
b. number of documents  
c. indexs size

---

<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [February 8, 2018, 2:05pm UTC](https://discuss.elastic.co/t/elastic-search-index-number-and-size-limitations/119056/2 "2018-02-08T14:05:12Z")

</div>

May I suggest you look at the following resources about sizing:

[https://www.elastic.co/elasticon/conf/2016/sf/quantitative-cluster-sizing](https://www.elastic.co/elasticon/conf/2016/sf/quantitative-cluster-sizing)

> **[How many shards should I have in my Elasticsearch cluster?
	  	 | Elastic](https://www.elastic.co/blog/how-many-shards-should-i-have-in-my-elasticsearch-cluster)**
>
> Elasticsearch is a very versatile platform, that supports a variety of use cases, and provides great flexibility around data organisation and replication strategies. This flexibility can however somet...

> **[NetSecureDay: Managing your Black Friday Logs](https://speakerdeck.com/elastic/netsecureday-managing-your-black-friday-logs)**
>
> Surveiller une application complexe n’est pas une tâche aisée, mais avec les bons outils, ce n’est pas si sorcier. Néanmoins, des périodes fortes telles que les opérations de type « Black Friday » (Vendredi noir) ou période de Noël peuvent pousser...

---

<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:** [March 8, 2018, 2:05pm UTC](https://discuss.elastic.co/t/elastic-search-index-number-and-size-limitations/119056/3 "2018-03-08T14:05:19Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.