To optimize the performance of virtual machine hosts, it is recommended that you designate one or more hosts as maintenance hosts. A maintenance host is a host that you dedicate for virtual machine maintenance tasks, such as patching stored virtual machines and templates or staging scripted virtual machine creation before moving the virtual machines into your production environment. By using a dedicated host to perform virtual machine maintenance tasks, you can avoid affecting the performance and host rating of a production host while performing such tasks.

A maintenance host should not be confused with a host that is in maintenance mode. You start maintenance mode temporarily on a host to perform maintenance tasks to the physical host, while you designate a maintenance host to perform ongoing maintenance tasks to virtual machines. For more information about maintenance mode, see About Maintenance Mode.

You should remove a designated maintenance host from placement so that it will not be included in the host ratings during the placement of virtual machines. For more information about removing a host from placement, see How to Set Placement Options for a Host.

See Also

For the most up-to-date Help information, go to the Virtual Machine Manager 2008 Help Online. To find additional Virtual Machine Manager 2008 documentation, go to the Virtual Machine Manager 2008 TechCenter Library.