PeterB posted a topic about all known HA advanced options on the Dutch VMUG. If anyone has more options please post ‘em and let’s try to make this list as long as possible:

• das.failuredetectiontime – Amount of milliseconds, timeout time for isolation response action
• das.isolationaddress – IP adres the ESX hosts uses for it’s heartbeat. It will use the default gateway by default.
• das.isolationaddress2 – Secondary heartbeat address
• das.poweroffonisolation – Values are False or True, this is for setting the isolation response. Default a VM will be powered off.
• das.vmMemoryMinMB – Higher values will reserve more space for failovers.
• das.vmCpuMinMHz - Higher values will reserve more space for failovers.
• das.defaultfailoverhost - Value is a hostname, this host will be the primary failover host.