virtual machine heartbeat delay

I have a cluster of 14 hosts with 150+ VMs. The VC is 2.5 U2 and the hosts 3.5 U2. I have enabled an alarm to alert when a VM heartbeat is lost. The problem being is that if the VM is under load it may occassionally lose heartbeats and trigger the alarm. If I edit the file /etc/vmware/hostd/config.xml and set the heartbeatDelayInSecs tag under vmsvc to 0 seconds as below:





Will this delay the heartbeat alarm triggers?

Also VM monitoring is not enabled at the cluster level.

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