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IP Addressing and Subnets

To configure high-availability (HA), you must consider the subnet that is used by the secondary HA host and the virtual IP address.

Administrators must ensure that the following conditions are met:

  • The secondary host is in the same subnet as the primary host.

  • When the IP address of the primary host is reassigned as a cluster virtual IP, the new IP address that you assign must be in the same subnet.

  • The secondary HA host that you want to add to the HA cluster is not a component in another HA cluster.

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