# Storage/Performance optimization

**URL:** https://discuss.elastic.co/t/storage-performance-optimization/152393
**Category:** Elasticsearch
**Created:** [October 14, 2018, 3:31pm UTC](https://discuss.elastic.co/t/storage-performance-optimization/152393 "2018-10-14T15:31:22Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![Neha\_Sharma1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/neha_sharma1/32/36504_2.png) [@Neha\_Sharma1](https://discuss.elastic.co/u/Neha_Sharma1)
#### Post date: [October 14, 2018, 5:16pm UTC](https://discuss.elastic.co/t/storage-performance-optimization/152393/3 "2018-10-14T17:16:24Z")

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Thanks [Christian\_Dahlqvist]

We have over 100 micro-services, so each micro-service has its own index. We have default shard number set to 6. Our index size differs from few MBs to 500-660 GB.

Also currently some of our nodes in the cluster have primary shards only. Is there a setting which needs to be tuned so that all primary shards in the cluster are equally distributed on nodes and so are the replicas after that.

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