13.4. Virtual Machine High Availability

This section provides instructions on how to configure virtual machine high availability. When a highly available virtual machine crashes due to a virtual machine error, it will be automatically restarted on the same host. In contrast, when a highly available virtual machine crashes because of a host error, it will be automatically restarted on another host in the same cluster.

Important

High availability can only be configured for virtual servers, not virtual desktops.

13.4.1. Configuring a Highly Available Virtual Machine

High availability must be configured individually for each virtual machine.

To mark a virtual machine as highly available:

  1. On the Virtual Machines tab, select the entry for the virtual machine that you want to migrate, and click the Edit button.
  2. On the Edit Server Virtual Machine dialog, click the High Availability tab.
    Set virtual machine high availability

    Figure 13.4. Set virtual machine high availability


  3. Tick the Highly Available checkbox. Set the priority of the virtual machine by selecting Low, Medium, or High under Priority for Run/Migrate Queue. When migration is triggered, a queue is created in which the high priority virtual machines are migrated first. If a cluster is running low on resources, only the high priority virtual machines are migrated.
  4. Click OK to set the virtual machine high availability.
You can check if a virtual machine is highly available when you select it and click on its General tab in the details pane.