Use the following procedure to customize host ratings for a virtual machine when you deploy or migrate it. These settings override the system-wide placement defaults that are set through placement settings in Administration view.
This procedure provides instructions for customizing host ratings from any of the following wizards:
- New Virtual Machine
- Clone Virtual Machine
- Convert Physical Server
- Convert Virtual Machine
- Deploy Virtual Machine
- Migrate Virtual Machine
-
On the Select Virtual Machine Host page of the wizard, click Customize Ratings.
-
Click the Placement options tab, and then select one of the following goals in determining the most suitable host for the virtual machine:
- Load balancing—Host suitability is
rated based on the intent to distribute the processing load equally
among all of the hosts scoped for virtual machine placement.
- Resource maximization—Host suitability
is rated based on the intent to consolidate multiple
low-utilization workloads on a single host. Virtual machine
placement in these cases involves determining the capacity limits
for a particular host and placing virtual machines on that host
until the limits are reached.
- Load balancing—Host suitability is
rated based on the intent to distribute the processing load equally
among all of the hosts scoped for virtual machine placement.
-
Under Resource importance, indicate the relative importance to place on CPU utilization, available memory, disk I/O, and network utilization when placing the current virtual machine.
-
Click the VM Load tab, and then modify the current workload characterization for this virtual machine. For a new virtual machine, the values are the default values. For existing virtual machines, these values are updated based on the collected performance counters:
- Under CPU:
Expected utilization (%)—The default is 20%.
- Under Disk:
Required physical disk space (GB)—The default is 2 GB.
Expected disk I/O per second (IOPS)—The default is 0.
- Under Network:
Expected utilization (megabits per second)—The default is 0.
- Under CPU:
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.