> Given that status information is stored in the VM "database", I would > expect that a filesystem replication strategy would work 98% of the time, > and the other 2% would destroy information. I wouldn't trust anything less > than a real distributed DBMS to work robustly.
Thing is, when the standby would take over, it would not know anything about another system so would it know or care about any state issues. It would just start up services as if it were being booted and go into operation. Calls would drop since media would stop during this process but otherwise, phones would just reconnect would they not. Devices registered to an SBC wouldn't even know what happened other than the server went down for a moment. The total time down would be from the time the front end recognized that the server went down, to the trigger being sent to the standby and it starting up it's services, including database.
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