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This illustration shows zone distribution in a KVStore with Master Affinity in use. The diagram has three rectangular boxes, from left to right, representing Primary Zones 1, 2, and 3. To the right of the Primary Zones are two secondary zones, Zones 4 and 5. Two shards, Shard 1 and 2, overlay all zones. Both Shards 1 and 2 has Master nodes in Primary Zone 2. Primary Zones 1 and 3, in Shards 1 and 2, respectively, do not have a Master Node.