5.8.5

Table Of Contents
Procedure
1 In the inventory pane, select the object that you want to inspect.
2 Click the arrow under the Efficiency badge to expand the detailed view.
3 In the Views tab, select the Oversized Virtual Machines - List view.
The virtual machines that appear in this view are underused and have more capacity than is required
for the workload.
4 To determine how to update the CPU, check the value in the Recommended vCPU column.
5 (Optional) To examine a datacenter, run a Capacity Overview Report from the Reports tab.
What to do next
Assign more work to the underused virtual machines or reconfigure the capacity appropriate to the virtual
machine load.
Determine the Trend of Waste for a Virtual Machine
To optimize the capacity for your virtual environment, determine the trend of powered off, idle, undersized,
and oversized virtual machines over a period of time to help you identify wasted resources.
Prerequisites
Verify that you are logged in to a vSphere Client and that vCenter Operations Manager is open.
Procedure
1 In the inventory pane, select the object that you want to inspect.
2 Click the Views tab under the Planning tab and select the Virtual Machine Waste and Stress -Trend
view.
The CPU, memory, disk I/O, and network resources trend charts appear in this view.
3 (Optional) To view the object resource data in a list, click the Table link.
4 To view the object resource data interval, select the timeframe from the Interval drop-down menu and
click Update.
What to do next
Depending on the trend of wasted resources, reconfigure the capacity to be appropriate for the virtual
machine load.
Forecasting Data for Capacity Risk
Forecasting data for capacity risk in vCenter Operations Manager involves creating capacity scenarios to
examine the demand and supply of resources in the virtual infrastructure.
A what-if scenario is a supposition about how capacity and load change if certain conditions are changed,
without making actual changes to your virtual infrastructure. If you implement the scenario, you know in
advance what your capacity requirements are.
NOTE The What-if Scenario wizard is accessible only if you select a host or a cluster in the inventory pane.
vCenter Operations Manager assigns names, such as Add 1 New VM, to scenarios. The What-if Scenarios
pane refreshes as each new scenario is applied in the view results. Scenarios persist until you delete them or
until you refresh vCenter Operations Manager.
VMware vCenter Operations Manager Getting Started Guide
58 VMware, Inc.