Supported Cluster Topologies
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Cluster topology affects how nodes are arranged within a cluster. Topology impacts the availability and performance of your MongoDB deployment.
The topology you choose can affect how mongosync synchronizes data between
clusters.
Requirements
mongosync supports two cluster topologies:
If you are syncing a sharded cluster to another sharded cluster, they are not required to have the same number of shards.
mongosync doesn't support sync from a sharded cluster to a replica set.
Get Started
To sync a replica set to a replica set, see the Quick Start Guide.
To sync a replica set to a sharded cluster, see Sync a Replica Set to a Sharded Cluster.
To sync a sharded cluster to another sharded cluster, see Sync Sharded Clusters.