MongoDB Atlas Infinite Cluster Costs

Compute Costs for Atlas Infinite

Atlas Infinite meters compute per highly available shard (HA shard). An HA shard is a two-node compute billing unit that consists of a primary and a standby. Atlas Infinite uses this node pair to provide high availability. An HA shard is an Atlas Infinite billing unit only, and is distinct from a MongoDB shard. In addition to each HA shard, Atlas Infinite meters any additional nodes that you add.

Atlas meters compute hourly, based on the configured cluster tier of the HA shards and any additional nodes. Atlas bills compute independently of storage, so you can resize compute without changing your storage costs.

Atlas bills compute for your provisioned nodes even when the cluster is idle.

Storage Costs for Atlas Infinite

Atlas Infinite stores all of your data in a managed storage layer. All compute nodes, including transactional and workload-specific (for example, read-only or analytical) nodes, share this storage layer.

Atlas meters storage hourly by the volume of uncompressed logical data that you store, measured in gigabyte-hours (GB-hours). Because storage is decoupled from compute, Atlas bills storage independently of the compute nodes that run your queries.

On an Atlas Infinite cluster, storage includes the data inserted and stored in your database cluster and the oplog collection, local.oplog.rs.

To learn how the oplog behaves on an Atlas Infinite cluster, see Oplog on Atlas Infinite clusters.

Backup Costs for Atlas Infinite

Atlas bills backup storage on Atlas Infinite edition as a separate billing dimension, independent of compute and of your primary storage. Atlas meters backup hourly by the volume of uncompressed storage that your backups consume, measured in gigabyte-hours (GB-hours).

Atlas Infinite includes 24 hours of continuous cloud backup at no additional cost. If you extend backup retention beyond the default 24-hour window, Atlas bills the additional backup storage that your retained snapshots or incremental changes consume. Atlas bills this retained history as backup, not as cluster storage.

Data Transfer Costs for Atlas Infinite

Atlas charges for data transfer on Atlas Infinite clusters, following the same data transfer billing as other Atlas clusters. To learn more, see Data Transfer Costs.

Atlas doesn't charge for data that Atlas Infinite replicates within the storage layer. Because the storage layer manages replication, backup, and recovery internally, this internal data movement doesn't count toward your data transfer costs.