# Choosing a size for nodes

**URL:** https://discuss.elastic.co/t/choosing-a-size-for-nodes/95421
**Category:** Elasticsearch
**Created:** [August 1, 2017, 9:24pm UTC](https://discuss.elastic.co/t/choosing-a-size-for-nodes/95421 "2017-08-01T21:24:13Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![samdash](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/samdash/32/21628_2.png) [@samdash](https://discuss.elastic.co/u/samdash)
#### Post date: [August 1, 2017, 9:24pm UTC](https://discuss.elastic.co/t/choosing-a-size-for-nodes/95421/1 "2017-08-01T21:24:13Z")

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I have 3 node cluster with: **data : true, master :true**  
And my index size is 50GB. And i have default setting with 5 shards and 1 replica, I would like to know what is the optimal RAM and DiskSpace required?

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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: [August 29, 2017, 9:24pm UTC](https://discuss.elastic.co/t/choosing-a-size-for-nodes/95421/2 "2017-08-29T21:24:32Z")

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