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As shown in the figure, in n-node replication, when the primary node is suddenly interrupted during real-time replication, such as a power failure, data inconsistency may occur between secondary nodes that received replication data. Even if the replication data is delivered in real time from the primary node, the data is delivered asynchronously to each node, so data inconsistency between nodes is inevitable. The problem is that the remaining nodes all have the data status UpToDate.
In this situation, FSR determines which of the remaining nodes has synchronizes based on the node with the most recent data and synchronizes that node to the source among the surviving nodes to match the data on all the remaining surviving nodes in the cluster. This is called reconciliation resynchronization.
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