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Create a Cluster

In this tutorial, you'll learn how to create a new Atlas cluster. To learn how to modify an existing Atlas cluster, see Modify a Cluster.

Clusters can be either a replica set or a sharded cluster. This tutorial walks you through creating a replica set.

The procedure for creating a new Atlas cluster differs depending on whether you already have one or more database deployments in your project.

[1](1, 2) For replica sets, the data-bearing servers are the servers hosting the replica set nodes. For sharded clusters, the data-bearing servers are the servers hosting the shards. For sharded clusters, Atlas also deploys servers for the config servers; these are charged at a rate separate from the cluster costs.
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