# Hot/Warm architecture question
**URL:** https://discuss.elastic.co/t/hot-warm-architecture-question/260119
**Category:** Elasticsearch
**Created:** [January 4, 2021, 6:28pm UTC](https://discuss.elastic.co/t/hot-warm-architecture-question/260119 "2021-01-04T18:28:45Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@frichard](https://discuss.elastic.co/u/frichard)
#### Post date: [January 4, 2021, 6:28pm UTC](https://discuss.elastic.co/t/hot-warm-architecture-question/260119/1 "2021-01-04T18:28:45Z")
Hi everyone !
I am discussing Elasticsearch architecture with my team, and we wondered if the following setup would work :
- 2 hot nodes
- 2 warm nodes
As a constraint, each index would have 1 replica for high availability.
**Let's say, one hot node break at a given time, would the other one serve the data and index new documents while we fix the broken node ? Or do we need to have 3hot/3warm for this use case ?**
Best regards,
Richard
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### Author:  [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)
#### Post date: [January 4, 2021, 7:26pm UTC](https://discuss.elastic.co/t/hot-warm-architecture-question/260119/2 "2021-01-04T19:26:42Z")
Yes, you only need two copies of each shard for HA, and therefore two data nodes in each tier. You do, however, need three master-eligible nodes. [Here are some docs](https://www.elastic.co/guide/en/elasticsearch/reference/current/high-availability-cluster-design.html) with more details.
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### Author:  [@frichard](https://discuss.elastic.co/u/frichard)
#### Post date: [January 5, 2021, 11:02am UTC](https://discuss.elastic.co/t/hot-warm-architecture-question/260119/3 "2021-01-05T11:02:14Z")
Hi Mr. Turner,
Thank you for your quick answer.
Best regards.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 2, 2021, 11:02am UTC](https://discuss.elastic.co/t/hot-warm-architecture-question/260119/4 "2021-02-02T11:02:34Z")
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