# Which memory is ECE actually assigning for node capacity?

**URL:** <https://discuss.elastic.co/t/which-memory-is-ece-actually-assigning-for-node-capacity/75535>\
**Category:** Elastic Cloud Enterprise (ECE)\
**Created:** [February 17, 2017, 4:44pm UTC](https://discuss.elastic.co/t/which-memory-is-ece-actually-assigning-for-node-capacity/75535 "2017-02-17T16:44:25Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![YuWatanabe](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yuwatanabe/32/13259_2.png) [@YuWatanabe](https://discuss.elastic.co/u/YuWatanabe)\
**Post date:** [February 17, 2017, 4:44pm UTC](https://discuss.elastic.co/t/which-memory-is-ece-actually-assigning-for-node-capacity/75535/1 "2017-02-17T16:44:25Z")

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When creating cluster , you set **memory** in **Node capacity**.

 ![](https://us1.discourse-cdn.com/elastic/original/2X/e/e895db1ff390525a277a82d4c868d6d452f026aa.PNG)

However, I would like to be sure what this memory stands for.  
Does this memory refer to **available memory** in the [document](https://www.elastic.co/guide/en/cloud-enterprise/current/ece-planning.html#ece-heap)?

Which my understanding of available memory is that

available memory = heap memory + other necessary os resource.

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [February 18, 2017, 3:38am UTC](https://discuss.elastic.co/t/which-memory-is-ece-actually-assigning-for-node-capacity/75535/2 "2017-02-18T03:38:50Z")

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> [@YuWatanabe](#):
>
> Which my understanding of available memory is that
> 
> available memory = heap memory + other necessary os resource

Correct! 🙂

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<div class="post-metadata">

**Author:** ![YuWatanabe](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yuwatanabe/32/13259_2.png) [@YuWatanabe](https://discuss.elastic.co/u/YuWatanabe)\
**Post date:** [February 18, 2017, 3:53am UTC](https://discuss.elastic.co/t/which-memory-is-ece-actually-assigning-for-node-capacity/75535/3 "2017-02-18T03:53:00Z")

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Thanks for the reply.

So , ECE tries to allocate both **heap** and **OS memory** instead of just heap memory?

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [February 18, 2017, 3:56am UTC](https://discuss.elastic.co/t/which-memory-is-ece-actually-assigning-for-node-capacity/75535/4 "2017-02-18T03:56:35Z")

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Well it allocates memory for the node, as it deploys containers, not just a jvm.  
It also just happens to split that 50:50.

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**Author:** ![YuWatanabe](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yuwatanabe/32/13259_2.png) [@YuWatanabe](https://discuss.elastic.co/u/YuWatanabe)\
**Post date:** [February 18, 2017, 4:19am UTC](https://discuss.elastic.co/t/which-memory-is-ece-actually-assigning-for-node-capacity/75535/5 "2017-02-18T04:19:36Z")

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@warkolm

Ok . Understood. Thank as always.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 4, 2017, 4:19am UTC](https://discuss.elastic.co/t/which-memory-is-ece-actually-assigning-for-node-capacity/75535/6 "2017-03-04T04:19:36Z")

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