5.6
Table Of Contents
- VMware vCenter Operations Manager Getting Started Guide
- Contents
- VMware vCenter Operations Manager Getting Started Guide
- Introducing Key Features and Concepts
- Beginning to Monitor the Virtual Environment
- Object Type Icons in the Inventory Pane
- Badge Concepts for vCenter Operations Manager
- Major Badges in vCenter Operations Manager
- Working with Metrics and Charts on the All Metrics Tab
- Viewing Members and Relationships in the Monitored Environment
- Check the Performance of Your Virtual Environment
- Balancing the Resources in Your Virtual Environment
- Find an ESX Host that Has Resources for More Virtual Machines
- Find a Cluster that Has Resources Available for More Virtual Machines
- Ranking the Health, Risk, and Efficiency Scores
- View the Compliance Details
- View a List of Members
- Overview of Relationships
- Troubleshooting with vCenter Operations Manager
- Troubleshooting Overview
- Troubleshooting a Help Desk Problem
- Troubleshooting an Alert
- Finding Problems in the Virtual Environment
- Finding the Cause of the Problem
- Determine Whether the Environment Operates as Expected
- Identify the Source of Performance Degradation
- Identify the Underlying Memory Resource Problem for a Virtual Machine
- Identify the Underlying Memory Resource Problem for Clusters and Hosts
- Identify the Top Resource Consumers
- Identify Events that Occurred when an Object Experienced Performance Degradation
- Determine the Extent of a Performance Degradation
- Determine the Timeframe and Nature of a Health Issue
- Determine the Cause of a Problem with a Specific Object
- Fix the Cause of the Problem
- Assessing Risk and Efficiency in vCenter Operations Manager
- Analyzing Data for Capacity Risk
- Determine When an Object Might Run Out of Resources
- Identify Clusters with the Space for Virtual Machines
- Investigating Abnormal Host Health
- Identify Datastores with Space for Virtual Machines
- Identify Datastores with Wasted Space
- Address a Problem with a Specific Virtual Machine
- Identify the Virtual Machines with Resource Waste Across Datastores
- Address a Problem with a Specific Datastore
- Identify the Host and Datastore with the Highest Latency
- Optimizing Data for Capacity
- Determine How Efficiently You Use the Virtual Infrastructure
- Identify the Consolidation Ratio Trend for a Datacenter or Cluster
- Determine Reclaimable Resources from Underused Objects
- Assess Virtual Machine Capacity Use
- Assess Virtual Machine Optimization Data
- Identify Powered-Off Virtual Machines to Optimize Data
- Identify Idle Virtual Machines to Optimize Capacity
- Identify Oversized Virtual Machines to Optimize Data
- Determine the Trend of Waste for a Virtual Machine
- Forecasting Data for Capacity Risk
- Create Capacity Scenarios for Virtual Machines With New Profiles
- Create Capacity Scenarios for Virtual Machines With Existing Profiles
- Create a Hardware Change Scenario
- Create a What-If Scenario to Remove Virtual Machines
- Combine the Results of What-If Scenarios
- Compare the Results of What-If Scenarios
- Delete a Scenario from the What-If Scenarios List
- Analyzing Data for Capacity Risk
- Working with Faults and Alerts
- Working with Groups
- Set How Data Appears in vCenter Operations Manager
- Create a New Policy
- Set the General Parameters of a Policy
- Associate a Policy with One or More Groups
- Customize Badge Thresholds for Infrastructure Objects
- Customize Badge Thresholds for Virtual Machine Objects
- Customize the Badge Thresholds for Groups
- Modify Capacity and Time Remaining Settings
- Modify Usable Capacity Settings
- Modify Usage Calculation Settings
- Modify the Criteria for Powered-Off and Idle Virtual Machine State
- Modify the Criteria for Oversized and Undersized Virtual Machines
- Modify the Criteria for Underused and Stressed Capacity
- Select Which Badges Generate Alerts
- Modify Trend and Forecast Analysis Settings
- Modify an Existing Policy
- Modify Summary, Views, and Reports Settings
- Create a New Policy
- Index
vCenter Operations Manager applies the scenario to the view you selected and shows current capacity
compared to the expected capacity if you add the virtual machines to the target object.
What to do next
If you have more than one scenario for a view, you can combine and compare the outcomes. To save the
information, export the scenario results.
Create a Hardware Change Scenario
Before you purchase new hardware, you can create hardware change scenarios to determine if the purchase
is necessary. To determine the effect of adding, removing, or updating the hardware capacity in a cluster, create
a scenario that models changes to hosts and datastores.
Prerequisites
In vCenter Operations Manager, verify that the Summary tab under the Planning tab is open.
Procedure
1 Select the target host in the inventory panel.
The target host is where you simulate changes to the environment to examine possible outcomes.
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 Hosts & Datastores and click Next.
5 Use the buttons to add, remove, or restore hosts in the host list.
Actions are applied only to hosts that you selected using the check boxes in the hosts list.
6 Click host rows to change the physical resources and click Save.
You can use the text boxes and drop-down menus to modify the CPU capacity and the memory size of
the selected host.
Option Description
CPU Total
Number of CPU cores that a target single host will have, followed by the
target processor core speed.
Memory Total
Amount of memory that the target host profile will have.
7 Click Next.
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.
Chapter 5 Assessing Risk and Efficiency in vCenter Operations Manager
VMware, Inc. 59