
Modify Virtual Machine OVF Environment Properties
If a virtual machine includes user-configurable OVF environment properties, you can review and modify those
properties.
If the vApp containing the virtual machine includes a value for a user-configurable property of the same name,
the virtual machine value takes precedence.
Prerequisites
The virtual machine is powered off and its OVF environment includes user-configurable properties.
Procedure
1 Click My Cloud.
2 In the left pane, click VMs.
3 Select a virtual machine, right-click, and select Properties.
4 On the Custom Properties tab, modify the properties and click OK.
Configuring Virtual Machine Resource Allocation Settings
Reservation pool virtual datacenters support the ability to control resource allocation at the virtual machine
level. Users with the necessary rights can customize the amount of resources that are allocated to their virtual
machines.
Use the resource allocation settings (shares, reservation, and limit) to determine the amount of CPU, memory,
and storage resources provided for a virtual machine. Users have several options for allocating resources.
n
Ensure that a certain amount of memory for a virtual machine is provided by the virtual datacenter.
n
Guarantee that a particular virtual machine is always allocated a higher percentage of the virtual
datacenter resources than other virtual machines.
n
Set an upper bound on the resources that can be allocated to a virtual machine.
Resource Allocation Shares
Shares specify the relative importance of a virtual machine within a vDC. If a virtual machine has twice as
many shares of a resource as another virtual machine, it is entitled to consume twice as much of that resource
when these two virtual machines are competing for resources.
Shares are typically specified as High, Normal, or Low and these values specify share values with a 4:2:1 ratio,
respectively. You can also select Custom to assign a specific number of shares (which expresses a proportional
weight) to each virtual machine.
When you assign shares to a virtual machine, you always specify the priority for that virtual machine relative
to other powered-on virtual machines.
The following table shows the default CPU and memory share values for a virtual machine.
Table 9-2. Share Values
Setting CPU share values Memory share values
High 2000 shares per virtual CPU 20 shares per megabyte of configured virtual machine
memory.
Normal 1000 shares per virtual CPU 10 shares per megabyte of configured virtual machine
memory.
Low 500 shares per virtual CPU 5 shares per megabyte of configured virtual machine
memory.
Chapter 9 Working with Virtual Machines
VMware, Inc. 97
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