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Tutorial: Create a New 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.

Atlas-managed MongoDB deployments, or “clusters”, can be either a replica set or a sharded cluster. This tutorial walks you through creating a replica set.

Procedure

The procedure for creating a new Atlas cluster differs depending on whether or not you already have one or more clusters in your project.

1

Select the project in which to deploy your cluster.

Click the Context drop down in the top left corner to select the project in which to deploy your cluster.

Context dropdown

For more information on creating and managing organizations and projects, see Organizations and Projects.

2

Select a cluster type.

Begin the cluster configuration process by choosing one of three cluster types: Starter, Single-Region, or Multi-Region. Each panel leads to a configuration page where you can customize your cluster to your specifications.

Starter Clusters
Starter clusters include the M0, M2, and M5 tiers. These low-cost cluster types are suitable for teams who are learning MongoDB or developing small proof-of-concept applications. You can begin your project with a starter cluster and upgrade to a production-ready tier at a future time.
Single-Region Clusters
Single-Region clusters include M10 and higher tiers. The M10 and M20 tiers are suitable for development environments and low-traffic applications, while higher tiers can handle large datasets and high-traffic applications. Single-Region clusters are deployed into a single geographical region, which reduces monthly costs but also reduces resilience in case of a regional network outage.
Multi-Region Clusters
Multi-Region clusters are deployed into multiple geographical regions, providing high availability and low latency for applications which are served worldwide. To deploy a global cluster, toggle the Global Clusters switch to On.

Select your preferred cluster preset and click Create a Cluster to customize the cluster configuration prior to deployment. If you prefer to configure your cluster with no preset options, click Advanced Configuration Options in the lower-right corner of the screen.

Cluster types
3

Select your preferred Cloud Provider & Region.

The choice of cloud provider and region affects the configuration options for the available cluster tiers, network latency for clients accessing your cluster, the geographic location of the nodes in your cluster, and the cost of running the cluster.

Image showing the Cloud Provider region selection.

For details, see Cloud Providers and Regions.

From the Cloud Provider & Region section, you can also configure Multi-Region, Workload Isolation, and Replication Options.

4

Select the Cluster Tier.

The selected tier dictates the memory, storage, and IOPS specification for each data-bearing server [1] in the cluster.

Image showing the cluster tier selection.

For details, see Cluster Tier.

From the Cluster Tier section, you can also:

6

Enter the Cluster Name.

This is the cluster name as it appears in Atlas. You cannot change the cluster name once Atlas deploys the cluster.

Name cluster input
7

Deploy your Cluster.

Click Create Cluster below the form to deploy your cluster.

Important

Each Atlas project supports up to 25 clusters. Please contact Atlas support for questions or assistance regarding the cluster limit. To contact support, select Support from the left-hand navigation bar of the Atlas UI.

1

Select the project in which to deploy your cluster.

Click the Context drop down in the top left corner to select the project in which to deploy your cluster.

Context dropdown

For more information on creating and managing organizations and projects, see Organizations and Projects.

2

Open the Create New Cluster Dialog.

Navigate to the Clusters view and click the Build a New Cluster button to display the Create New Cluster dialog.

New cluster button
3

Select your preferred Cloud Provider & Region.

The choice of cloud provider and region affects the configuration options for the available cluster tiers, network latency for clients accessing your cluster, the geographic location of the nodes in your cluster, and the cost of running the cluster.

Image showing the Cloud Provider region selection.

For details, see Cloud Providers and Regions.

From the Cloud Provider & Region section, you can also configure Multi-Region, Workload Isolation, and Replication Options.

4

Select the Cluster Tier.

The selected tier dictates the memory, storage, and IOPS specification for each data-bearing server [1] in the cluster.

Image showing the cluster tier selection.

For details, see Cluster Tier.

From the Cluster Tier section, you can also:

6

Enter the Cluster Name.

This is the cluster name as it appears in Atlas. You cannot change the cluster name once Atlas deploys the cluster.

Name cluster input
7

Deploy your Cluster.

Click Create Cluster below the form to deploy your cluster.

Important

Each Atlas project supports up to 25 clusters. Please contact Atlas support for questions or assistance regarding the cluster limit. To contact support, select Support from the left-hand navigation bar of the Atlas UI.

[1](1, 2, 3, 4) 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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