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Foglight Capacity Director 7.3.0 - User Guide (Lite version)

Clusters/Hosts and Workload tabs

Clusters/Hosts and Workload tabs

The Clusters tab and the Hosts and Workload tab display the details related to the selected virtual center or datacenter. This information is automatically updated after selecting a cluster.

The Clusters tab includes the following data:

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Select a Cluster: Lists available clusters in the selected virtual center or datacenter.
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Resource Utilization
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Current Capacity: Displays the current capacity of the selected cluster, which includes the following data: CPU, Memory, Storage, Hypervisors, and VMs and Templates.
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Peak CPU Performance: Displays the current CPU data of the selected cluster, which includes the following data: vCPU/Core Ratio, Physical CPU Cores, Powered On vCPUs, and Average % Ready.
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Recommendations: Displays recommendations on the resources (CPU, Memory, and Storage) to be added in the future to ensure that the resource utilization is balanced. Use the Settings dialog box to edit the Baseline for Forecasting.
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Resource utilization related views: Projected CPU Usage view, Projected Memory Usage view, Projected Storage Usage view, and Projected Storage IOPs Usage view. The metric line in the white area is the history data, while the metric line in the gray area is the predicted data. For more information, see Resource Utilization related views.

The Hosts and Workload tab includes the following data:

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Select a Cluster: Lists available clusters in the selected virtual center or datacenter.
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Overview: Summarizes the CPU capacity and memory capacity of the selected cluster. Both capacities are calculated based on the value selected from the Host Size drop-down list. The Host Size drop-down list includes the following options: average host size (default value) and based on specific host. The Host Requirement - Average Host Size view is refreshed automatically after changing the Host Size value. For more information, see Calculating Host Size based on specific host.
The value of Baseline for Forecasting on the display area can be edited using the Settings dialog box.
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Host Requirement - Average Host Size: Displays the number of Required Hosts and Available Hosts, if the existing server is used as the calculation benchmark.
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Required Hosts: Shows with the blue line, indicating how many hosts are required to support the current number of virtual machines. This number is populated based on the value selected from the Host Size drop-down list.
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Available Hosts: Shows with the amber line, indicating the number of hosts, available in the selected cluster.

Calculating Host Size based on specific host

To recalculate the host size based on specific host:
1
In the Hosts and Workload Overview pane, select based on specific host from the Host Size drop-down list.
The Browse button becomes available on the right side of the Host Size drop-down list.
2
Click Browse to select a host in the Specific Host Selector dialog box, and click OK.
The Specific Host Selector dialog box closes and the Host Requirement - Average Host Size view is refreshed automatically.

Resource Utilization related views

This section provides a detailed description of the following metrics presented in the embedded views in the Resource Utilization > Clusters tab.

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Projected CPU Usage view
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Projected Memory Usage view
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Projected Storage Usage view
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Projected Storage IOPs Usage view

Projected CPU Usage view

This embedded view is part of the Resource Utilization > Clusters view. To display this view, click the Clusters tab in the Resource Utilization view, and select a cluster from the Cluster Name table.

Table 1. Projected CPU Usage view
Description

This view displays CPU utilization metrics on the selected cluster.

Data displayed
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Utilization: This chart shows the actual CPU usage (in GHz).
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Capacity: This chart shows the total CPU capacity (in GHz).
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HA Capacity: If the HA policy is enabled on the selected cluster, this chart is plotted to show the actual CPU usage (in GHz).
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Used Hz: Shows the current CPU usage (in GHz).
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Growth Rate Per Week: Shows the growth rate of CPU capacity per week.
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R-squared: Indicates the accuracy of the forecasting data. This value is ranged from 0 to 1, and a higher value indicates that the forecasting data of utilization is more accurate.
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Total Hz: Shows the current CPU capacity (in GHz).
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Time To Full:
HA enabled: Shows the period when the actual CPU usage (the Utilization metric) exceeds the HA capacity metric. This metric is calculated based on the Growth Rate Per Week.
HA disabled: Shows the period when the actual CPU usage (the Utilization metric) exceeds the total CPU capacity (the Capacity metric). This metric is calculated based on the Growth Rate Per Week.
•
P-value: Indicates the dependency between the utilization and history time. This value is ranged from 0 to 1, and a lower value indicates that the utilization has a more significant dependency with the history time.
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