5.8.5

Table Of Contents
8 Use the buttons to add, remove, or restore datastores in the datastores list.
Actions are applied only to datastores that you selected using the check boxes in the datastores list.
9 Click datastore rows to modify the disk size and click Save.
The Population Details pane to the right contains information about the actual datastore capacity, the
disk I/O use, and the number of hosts that link the datastore. The sharing status indicates whether
different hosts share the datastore.
10 Click Next.
11 On the Ready to Complete page, check the parameters of your what-if scenario and click Finish to view
the outcomes.
vCenter Operations Manager applies the scenario to the view that you selected. The scenario forecast
appears in the chart as a gray dotted line. You can compare the actual current capacity to the expected
capacity if you apply the changes you specified in the hardware change scenario.
What to do next
If you have more than one scenario, you can combine or compare the scenario outcomes. You can export the
scenario results to an Adobe PDF or CSV file to save the information.
Create a What-If Scenario to Remove Virtual Machines
You can create a scenario that simulates removing a virtual machine or group of virtual machines from a
host or a cluster.
Prerequisites
In vCenter Operations Manager, verify that the Summary tab under the Planning tab is open.
Procedure
1 Select the target object in the inventory panel.
The target object identifies the host or the cluster from which the virtual machines are removed if you
implement your scenario.
2 Click the New what-if scenario link.
3 Select a view for the scenario and click Next.
This step is not available if you opened the What-if Scenario wizard from the Views tab.
4 On the Change Type page, select Virtual machines and click Next.
5 Select Remove virtual machines and click Next.
6 On the Configuration page, select the virtual machines to remove from the selected host or cluster and
click Next.
7 On the Ready to Complete page, check the parameters of your what-if scenario and click Finish to view
the outcomes.
vCenter Operations Manager applies the scenario to the view that you selected. The forecasted capacity
appears in the chart as a gray dotted line. You can compare the current capacity to the expected capacity if
you remove the virtual machines from the target object.
What to do next
If you have more than one scenario, you can combine or compare the scenario outcomes. You can export the
scenario results to an Adobe PDF or CSV file to save the information.
VMware vCenter Operations Manager Getting Started Guide
62 VMware, Inc.