5.8.5
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
- Monitor the Performance of vCenter Operations Manager
- Index
Option Description
Virtual Disk Linked Clone
Shared space that uses linked clones.
Linked clones involve delta disks that reference a master disk rather than a
full copy of the entire virtual hard disk. For thick disks with linked clones,
vCenter Operations Manager calculates linked clone capacity as one
master copy that uses 100 percent of the specified disk size and the
remaining copies use 10 percent delta disks. For thin disks with linked
clones, vCenter Operations Manager uses the same calculation but the disk
size multiplied by the use percentage defines the master copy size.
Virtual Disk Configuration
Disk size.
Virtual Disk Utilization
Expected average disk use for the virtual machine.
The use percentage applies only to thin disks.
vCenter Operations Manager does not require you to specify the disk I/O and network I/O use of the
new virtual machines, and instead uses the average disk I/O and network I/O use across virtual
machines in the host or cluster as an estimation of the new virtual machine use.
7 Click Next when your configuration selections are complete.
8 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 you selected and shows current capacity
compared to the expected capacity if you add the virtual machines to the target object.
Create Capacity Scenarios for Virtual Machines With Existing Profiles
You can create a scenario that uses profiles of existing virtual machines as models to simulate adding one or
more new virtual machines to a host or a cluster.
To help you make configuration selections for virtual machines, the right pane of the What-If Scenario
wizard contains population information that shows the total virtual machine use of the selected object and
representative virtual machine data. vCenter Operations Manager calculates virtual machine data by
partitioning the range of capacity for CPU, memory, and disk dimensions into thirds, assigning the virtual
machines to bins based on configuration, and creating a profile for each bin where the capacity of the profile
is the maximum configuration of the virtual machines in the bin and the use of the profile is the average
usage of the virtual machines in the bin. The value of the virtual machines assigned to the profile and the
use is the average of the virtual machines assigned to the profile. The right pane includes information on the
smallest and largest hosts.
For information about relevant CPU and memory maximums, see the VMware vSphere documentation.
NOTE The What-if Scenario wizard is accessible only if you select a host or a cluster in the inventory pane.
Prerequisites
In vCenter Operations Manager, verify that the Summary tab under the Planning tab is open.
Procedure
1 Select the destination object in the inventory pane.
The destination object is a cluster or host where you locate the new virtual machines if you implement
your scenario.
2 Click the New what-if scenario link.
The What-If Scenario wizard opens.
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.
VMware vCenter Operations Manager Getting Started Guide
60 VMware, Inc.