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Foglight Capacity Management 5.7.5 - User Guide

Scenario Modeler

The Scenario Modeler view allows you to project what happens if virtual machines are added to or moved among the servers supporting an IT infrastructure. Using this view you obtain the following projections:

Capacity management scenarios allow you to select host machines and target those machines against servers to project what happens if hosts are added or removed. Charts are generated, showing the result of the addition or removal of the hosts. You can select any number of hosts and predict their combined impact on the targeted server’s resources. You can also select any server to see the resource impact caused by all of its resident hosts.

Figure 24. Scenario Modeler

Thresholds are user-configurable. You change the hardware configuration of the server to learn about the effects of different hypothetical configurations. For example, what if you had four more CPUs? What if you had 3.6 gigahertz CPUs? What if you had twice as much memory? You create and model what the capacity loads could look like on a hypothetical server.

The Scenario Modeler view allows you to set scenario properties, select available hosts, choose a target server, and view the projected capacity metrics in the resulting graphs. When creating capacity management scenarios, you set the CPU capacity, memory capacity, network bandwidth, and total available storage based on the actual system used to host the virtual machines. These values are used to set the capacity lines on the charts that show the server’s capacities.

The Scenario Modeler tab provides the following views:

Create Usage Scenario

You begin by creating usage scenarios. These scenarios allow you to select available host machines, then target those machines to available servers to determine:

Figure 27. Usage scenarios

1
Click Create Usage Scenario.
Scenario Name—name assigned to the scenario.
Description—detailed description of scenario properties.
CPU Capacity (GHz)—CPU capacity of the server in gigahertz.
Memory Capacity(GB)—memory capacity of the server in gigabytes.
Network Bandwidth (Mb/s)—network bandwidth of the server in megabits per second.
Available Storage (GB)—available storage of the server in gigabytes.
3
Click Save.

Open Usage Scenario

After creating a capacity management usage scenario, you can open the scenario to change the originally entered properties to tailor capacity management needs.

1
Click Open Usage Scenario.
3

Edit Properties

After opening a usage scenario, Edit Properties allows you to edit a scenario already created and tailor its properties to change capacity management scenarios.

1
Click Edit Properties.
3
Click Save.
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