A. Only the heartbeat IP network can exist in a VPN style network.
B. HACMp must have separate VPN’s for all ’non-service’ and ’service’ adapter networks.
C. If a VPN is used for IP traffic the heartbeating must be done over disk connections.
D. HACMP can exist in a VPN network environment，but special considerations must be addressed.

A. Assume the system was stopped by a failure.
B. Ensure the hostname parameters is set correctly.
C. Assume the system was stopped by a graceful shutdown.
D. Mount all volumes and file systems before running the application.