# ES Cluster Capacity Planning - Storage Limit **URL:** \ **Category:** Elasticsearch\ **Created:** [September 10, 2019, 1:59pm UTC](https://discuss.elastic.co/t/es-cluster-capacity-planning-storage-limit/198915 "2019-09-10T13:59:03Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![moni15moni](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/moni15moni/32/42311_2.png) [@moni15moni](https://discuss.elastic.co/u/moni15moni)\ **Post date:** [September 10, 2019, 1:59pm UTC](https://discuss.elastic.co/t/es-cluster-capacity-planning-storage-limit/198915/1 "2019-09-10T13:59:03Z")
In elasticsearch documentation for capacity planning, I read Per GB Heap will handle the 20 shards, with avg shard size of 20 - 40 GB. In ES Cluster it has 10 data nodes with the following config, 64 GB Heap (30 GB heap-allocated) 16 CPU's 2 TB SSD What I would like to know based on the capacity planning docs, It's illustrated data storage per Data Node ( 30 GB heap allocated to ES ) 30 GB \* 20 Shards ( Each 20 - 40 GB) . = 600 Shards , Approx Disk size ( 12 TB - 24 TB ) Per node. How much TB we can have stored max per ES Data node? , Do we have any limit on this? I handled up to 5 TB per data node using the HDD . Does anyone store high storage size per data node? (Real-time or benchmark) ---
**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:** [September 14, 2019, 10:48am UTC](https://discuss.elastic.co/t/es-cluster-capacity-planning-storage-limit/198915/2 "2019-09-14T10:48:25Z")
The 20 shards per GB heap is a recommended maximum. The total amount of data a node can handle is generally limited by heap or query performance. There is no guarantee that a node can handle that many large shards. Have a look st [this webinar](https://www.elastic.co/webinars/optimizing-storage-efficiency-in-elasticsearch) for a discussion on the topic. ---
**Author:** ![moni15moni](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/moni15moni/32/42311_2.png) [@moni15moni](https://discuss.elastic.co/u/moni15moni)\ **Post date:** [September 16, 2019, 11:11am UTC](https://discuss.elastic.co/t/es-cluster-capacity-planning-storage-limit/198915/3 "2019-09-16T11:11:55Z")
Thank You, @Christian_Dahlqvist ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 14, 2019, 11:12am UTC](https://discuss.elastic.co/t/es-cluster-capacity-planning-storage-limit/198915/4 "2019-10-14T11:12:01Z")
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