Data Center Awareness

MongoDB provides a number of features that allow application developers and database administrators to customize the behavior of a sharded cluster or replica set deployment so that MongoDB may be more “data center aware,” or allow operational and location-based separation.

MongoDB also supports segregation based on functional parameters, to ensure that certain mongod instances are only used for reporting workloads or that certain high-frequency portions of a sharded collection only exist on specific shards.

Consider the following documents:

• Operational Segregation in MongoDB Operations and Deployments
• Tag Aware Sharding
• Deploy a Geographically Distributed Replica Set

Additionally, consider the Write Concern and Read Preference sections of the Replica Set Considerations and Behaviors for Applications and Development document, which addresses capabilities related to data center awareness.

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