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⇱ Limits on Atlas Cluster Types - Atlas - MongoDB Docs

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Limits on Atlas Cluster Types

The following limits apply to Atlas.

Atlas Limits

Atlas limits the number of the following items:

  • Components of particular type that you can create.

  • Connections allowed to a cluster. For clusters, the number of connections allowed depends on the cluster tier.

  • Global Cluster shard keys per project. Each Atlas project supports up to 40 Global Cluster shard keys. If you require multiple Global Clusters and might exceed this limit, deploy each additional Global Cluster in a separate project.

To learn more, see Atlas Service Limits. For questions or assistance, contact support:

1

In Atlas, go to the Support page.

  1. If it's not already displayed, select your desired organization from the Organizations menu in the navigation bar.

  2. Click the Support icon in the navigation bar.

  3. Click View plan.

The Support page displays.

2

Request support.

Atlas Flex Cluster Limits

Flex clusters have certain configuration limits, operational limits, and driver requirements. To learn more, see Atlas Flex Limitations.

Atlas Free Cluster Limits

Free clusters (formerly known as M0) have certain configuration limits, operational limits, and driver requirements. To learn more, see Atlas Free Cluster Limits.

Commands

Not all commands are supported on all tiers, and Atlas supports some commands only on Free clusters and Flex clusters.