# Max\_thread\_count can increase to num of HDD

**URL:** <https://discuss.elastic.co/t/max-thread-count-can-increase-to-num-of-hdd/211270>\
**Category:** Elasticsearch\
**Created:** [December 10, 2019, 10:19am UTC](https://discuss.elastic.co/t/max-thread-count-can-increase-to-num-of-hdd/211270 "2019-12-10T10:19:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Yogesh\_BG](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yogesh_bg/32/70018_2.png) [@Yogesh\_BG](https://discuss.elastic.co/u/Yogesh_BG)\
**Post date:** [December 10, 2019, 10:19am UTC](https://discuss.elastic.co/t/max-thread-count-can-increase-to-num-of-hdd/211270/1 "2019-12-10T10:19:19Z")

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Hi

I have a machine with 4 HDD's and RAID 0 enabled.

Can i increase the below conf to 4? equals to num of HDD's?

```
index.merge.scheduler.max_thread_count

```

[https://www.elastic.co/guide/en/elasticsearch/reference/6.6/index-modules-merge.html](https://www.elastic.co/guide/en/elasticsearch/reference/6.6/index-modules-merge.html)

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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:** [January 7, 2020, 10:19am UTC](https://discuss.elastic.co/t/max-thread-count-can-increase-to-num-of-hdd/211270/2 "2020-01-07T10:19:28Z")

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