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TIBCO ActiveSpaces® - Enterprise Edition 5.0.0

# Replication

To replicate data, you must configure the copysets in the data grid such that `copyset_size` is greater than 1.

The `copyset_size` configuration setting applies to all copysets in the data grid. When the `copyset_size` is greater than 1, one node in each copyset acts as the primary node that stores data and provides read access to that data. The other nodes in each copyset are secondary nodes that store copies of the data on the primary node. Every time data is written to the primary node, data is synchronized at the primary node and all secondary nodes in the copyset.

When the primary node of a copyset is down, one of the secondary nodes in the copyset takes over as the primary node. As each secondary node of the copyset contains copies of the same data that resides on the primary node, no data loss occurs and data grid operations continues as long as at least one node of the copyset remains running.

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TIBCO ActiveSpaces® - Enterprise Edition

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