# Joining a Single Node Cluster with 2 more nodes

**URL:** <https://discuss.elastic.co/t/joining-a-single-node-cluster-with-2-more-nodes/143106>\
**Category:** Elasticsearch\
**Created:** [August 6, 2018, 7:26am UTC](https://discuss.elastic.co/t/joining-a-single-node-cluster-with-2-more-nodes/143106 "2018-08-06T07:26:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![X\_Calibur](https://avatars.discourse-cdn.com/v4/letter/x/b2d939/32.png) [@X\_Calibur](https://discuss.elastic.co/u/X_Calibur)\
**Post date:** [August 6, 2018, 7:26am UTC](https://discuss.elastic.co/t/joining-a-single-node-cluster-with-2-more-nodes/143106/1 "2018-08-06T07:26:42Z")

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Hi,

At the moment we have a single cluster with a single node.  
The total data on this cluster spans about 3tb including hundreds of indices created on a daily basis. All indices have been configured with 1 shard and 0 replicas.

Now the task at hand is migrating this data to a 3 nodes, 3 shards, 1 replica cluster - without using snapshots if possible. I understand this is possible although the process itself is a bit unclear. If I join all 3 nodes together will the 3tb data still be available and searchable without changing shard allocation meaning it will remain on a single node with a single shard per index?

Thanks  
X

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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:** [September 3, 2018, 7:26am UTC](https://discuss.elastic.co/t/joining-a-single-node-cluster-with-2-more-nodes/143106/2 "2018-09-03T07:26:47Z")

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