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You can bring data from existing MongoDB deployments,
files into deployments in Atlas using either:
live migration where Atlas assists you, or
tools for a self-guided migration of data from your existing deployments into Atlas.
If both the source and destination clusters are running MongoDB 6.0.8 or later, you can migrate your data from a source cluster into an Atlas MongoDB cluster using one of the following types of guided live migration in the Atlas UI:
Live migration (pull). For instructions, see Live Migrate (Pull) a MongoDB 6.0.8+ Cluster into Atlas.
Live migration (push). For instructions, see Live Migrate (Push) a MongoDB 6.0.8+ Cluster Monitored by Cloud Manager into Atlas.
If you are migrating MongoDB versions earlier than 6.0.8, use one of the following migration methods, depending on your deployment's requirements and configuration.
Source Cluster Configuration
A MongoDB deployment running MongoDB earlier than 6.0.8 that isn't monitored by Cloud Manager or Ops Manager.
Use live migration (pull) where Atlas pulls data from the source deployment and requires access to the source deployment through the deployment's firewall.
A MongoDB deployment running MongoDB earlier than 6.0.8 that is monitored by Cloud Manager or Ops Manager.
A shared multi-tenant cluster, or a cluster where you have no access to the oplog, or a cluster that runs a MongoDB version that is no longer supported.
A replica set in AWS.
To load data into a new cluster in Atlas, see Load Sample Data.
To make a copy of your cluster for testing purposes, see MongoDB Backup Methods.
If the application that you want to migrate requires a near-continuous uptime, contact MongoDB Support and share your uptime requirements and cluster configuration.