6.0

Procedure
1 Select the VM restart priority for virtual machines in the cluster.
The restart priority determines the order in which virtual machines are restarted when the host fails.
Higher priority virtual machines are started first. This priority applies only on a per-host basis. If
multiple hosts fail, all virtual machines are migrated from the first host in order of priority, then all
virtual machines from the second host in order of priority, and so on.
2 Select the Host isolation response.
The host isolation response determines what happens when a host in a vSphere HA cluster loses its
console network connection but continues running.
3 Click Next.
Your virtual machine restart priority and host isolation response settings now take effect.
Configure VM and Application Monitoring
The Virtual Machine Monitoring feature uses the heartbeat information that VMware Tools captures as a
proxy for guest operating system availability. This allows vSphere HA automatically to reset or restart
individual virtual machines that have lost their ability to heartbeat.
The VM Monitoring page appears only if you enabled vSphere HA.
Prerequisites
Launch the vSphere Client and log in to a vCenter Server system.
Procedure
1 (Optional) Select VM Monitoring Only to restart individual virtual machines if their heartbeats are not
received within a set time. You can select VM and Application Monitoring if you also want to enable
application monitoring.
2 Set the virtual machine monitoring sensitivity by moving the slider between Low and High. Select
Custom to provide custom settings.
3 Click Next.
Configure Datastore Heartbeating
vSphere HA uses datastore heartbeating to distinguish between hosts that have failed and hosts that reside
on a network partition. Datastore heartbeating allows vSphere HA to monitor hosts when a management
network partition occurs and to continue to respond to failures that occur.
Use the Configure Datastore Heartbeating dialog box to specify the datastores that you want to be used for
this purpose.
Prerequisites
Launch the vSphere Client and log in to a vCenter Server system.
Procedure
1 In the vSphere Client, display the cluster in the inventory.
2 Right-click the cluster and select Edit Settings.
3 In the left pane of the Cluster Settings dialog box, select Datastore Heartbeating.
vSphere Administration with the vSphere Client
388 VMware, Inc.