# ILM hot-\>warm resource usage question

**URL:** <https://discuss.elastic.co/t/ilm-hot-warm-resource-usage-question/253213>\
**Category:** Elasticsearch\
**Created:** [October 24, 2020, 4:38pm UTC](https://discuss.elastic.co/t/ilm-hot-warm-resource-usage-question/253213 "2020-10-24T16:38:21Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![basdfa23](https://avatars.discourse-cdn.com/v4/letter/b/ecd19e/32.png) [@basdfa23](https://discuss.elastic.co/u/basdfa23)\
**Post date:** [October 24, 2020, 4:38pm UTC](https://discuss.elastic.co/t/ilm-hot-warm-resource-usage-question/253213/1 "2020-10-24T16:38:21Z")

</div>

Both force merge and best\_compression are resource intensive. If you set the ILM hot-\>warm rollover for the following actions:

- force merge
- change compression to best\_compression
- change replica from 0 to 1

On which nodes is the heavy resource usage? Hot or warm?

---

<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:** [November 21, 2020, 4:38pm UTC](https://discuss.elastic.co/t/ilm-hot-warm-resource-usage-question/253213/2 "2020-11-21T16:38:22Z")

</div>

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