6.7.4. Migrating Virtual Machines

A running virtual machine can be migrated to any host within its designated host cluster. This is especially useful if the load on a particular host is too great, and is essential before bringing a server down for maintenance (migration is automatic in this case). Migration of virtual machines does not cause any service interruption.

Note

Virtual Machines migrate within their designated host cluster. The system determines the host to which the virtual machine is migrated, according to the load balancing and power rules set up in the Policy Engine. These rules are explained in the advanced sections later in this guide — Section 13.4.2, “Setting a Cluster Resilience Policy” and Section 12.3.2, “Cluster Policy”.

To migrate a virtual machine to another host:

  1. Click the Virtual Machines tab.
  2. If the virtual machine you want to migrate is not visible in the list, perform a search (see Section 1.2, “Search”).
  3. Select the virtual machine.
  4. Click the Migrate button. The Migrate Virtual Machine dialog box displays.
  5. Choose from Select Host Automatically or specify a destination from the Select Destination Host list. If you chose Select Destination Host, only active hosts within the cluster display in the list.
  6. Click Close to close the dialog box.
The virtual machine is migrated to another host in the cluster. Shortly after, the Host column displays the new host to which the virtual machine has migrated.