A. Add hardware to provide either serial heartbeats or shared disk heartbeats.
B. Define the administration network so HACMP will send heartb4eats over the non-routed network.
C. Add the administration network adapters to the production resource groups with IPAT via IP replacement selections.
D. Configure the IP Network Interface Module in HACMP with an increased heartbeat detection rate to prevent node isolation confutations.

A. Ensure the rmt numbers are unique per node.
B. Nothing，because HACMP manages the state of the tape drive.
C. Nothing，because highly available tape devices are not supported.
D. Ensure that the tape device is in a defined state after system startup.