Efficiency. Setting up a MySQL Cluster on a private or protected network enables the cluster to
make exclusive use of bandwidth between cluster hosts. Using a separate switch for your MySQL
Cluster not only helps protect against unauthorized access to MySQL Cluster data, it also ensures
that MySQL Cluster nodes are shielded from interference caused by transmissions between other
computers on the network. For enhanced reliability, you can use dual switches and dual cards
to remove the network as a single point of failure; many device drivers support failover for such
communication links.
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