# How to calculate number of data node requirement in a cluster

**URL:** https://discuss.elastic.co/t/how-to-calculate-number-of-data-node-requirement-in-a-cluster/128879
**Category:** Elasticsearch
**Created:** [April 20, 2018, 12:43pm UTC](https://discuss.elastic.co/t/how-to-calculate-number-of-data-node-requirement-in-a-cluster/128879 "2018-04-20T12:43:44Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Jayakrishnan\_Nair](https://avatars.discourse-cdn.com/v4/letter/j/a4c791/32.png) [@Jayakrishnan\_Nair](https://discuss.elastic.co/u/Jayakrishnan_Nair)
#### Post date: [April 20, 2018, 12:43pm UTC](https://discuss.elastic.co/t/how-to-calculate-number-of-data-node-requirement-in-a-cluster/128879/1 "2018-04-20T12:43:44Z")

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```
How to calculate number of data only node required in a cluster. Calculating it in terms of number of shards, indexes or size of shards, indexes. 

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Can any give some pointer or limits that provides pointer to add more data only nodes to the cluster.

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### 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: [April 20, 2018, 12:54pm UTC](https://discuss.elastic.co/t/how-to-calculate-number-of-data-node-requirement-in-a-cluster/128879/2 "2018-04-20T12:54:33Z")

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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)

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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: [May 18, 2018, 12:54pm UTC](https://discuss.elastic.co/t/how-to-calculate-number-of-data-node-requirement-in-a-cluster/128879/3 "2018-05-18T12:54:39Z")

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