# Minimum number of Hot and Warm data nodes

**URL:** <https://discuss.elastic.co/t/minimum-number-of-hot-and-warm-data-nodes/84606>\
**Category:** Elasticsearch\
**Created:** [May 4, 2017, 6:17pm UTC](https://discuss.elastic.co/t/minimum-number-of-hot-and-warm-data-nodes/84606 "2017-05-04T18:17:08Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![mruthyu](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@mruthyu](https://discuss.elastic.co/u/mruthyu)\
**Post date:** [May 4, 2017, 6:17pm UTC](https://discuss.elastic.co/t/minimum-number-of-hot-and-warm-data-nodes/84606/1 "2017-05-04T18:17:08Z")

</div>

We are planning for a elasticsearch cluster with multiple hot and warm data nodes. Wanted to know whether minimum 2 nodes are fine for each of the data nodes or minimum 3 nodes are recommended. We have around 4TB of data. And Master and co-coordinating nodes are different. I do understand that 3 nodes will provide the HA. But wanted to understand it in more detail.

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [May 4, 2017, 6:42pm UTC](https://discuss.elastic.co/t/minimum-number-of-hot-and-warm-data-nodes/84606/2 "2017-05-04T18:42:00Z")

</div>

If you only have around 4TB of data, why do you think you need a hot/warm architecture?

---

<div class="post-metadata">

**Author:** ![mruthyu](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@mruthyu](https://discuss.elastic.co/u/mruthyu)\
**Post date:** [May 4, 2017, 6:45pm UTC](https://discuss.elastic.co/t/minimum-number-of-hot-and-warm-data-nodes/84606/3 "2017-05-04T18:45:06Z")

</div>

In future data will grow ..may be 50TB or 75TB or more. Is there any recommended data size where the usage hot and warm architecture will come into picture?

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [May 4, 2017, 6:59pm UTC](https://discuss.elastic.co/t/minimum-number-of-hot-and-warm-data-nodes/84606/4 "2017-05-04T18:59:32Z")

</div>

There is no clear guideline on when a hot/warm architecture starts making sense. It depends a lot on ingest volume, retention period and query patterns.

---

<div class="post-metadata">

**Author:** ![mruthyu](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@mruthyu](https://discuss.elastic.co/u/mruthyu)\
**Post date:** [May 5, 2017, 6:31pm UTC](https://discuss.elastic.co/t/minimum-number-of-hot-and-warm-data-nodes/84606/5 "2017-05-05T18:31:00Z")

</div>

Hi Christian, Can you please complete your comment? Thanks.

---

<div class="post-metadata">

**Author:** ![mruthyu](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@mruthyu](https://discuss.elastic.co/u/mruthyu)\
**Post date:** [May 5, 2017, 6:36pm UTC](https://discuss.elastic.co/t/minimum-number-of-hot-and-warm-data-nodes/84606/6 "2017-05-05T18:36:52Z")

</div>

Just to add the retention period is 8 days. So wanted to know whether hot and warm node architecture makes sense here.

---

<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:** [June 2, 2017, 6:46pm UTC](https://discuss.elastic.co/t/minimum-number-of-hot-and-warm-data-nodes/84606/7 "2017-06-02T18:46:50Z")

</div>

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