Optimizing Your Infrastructure > Creating an Optimization Scenario

Creating an Optimization Scenario

The Scenario Planning page enables you to create an optimization scenario. On the Detailed View page, select one or more Groups for optimization and click New Optimization Scenario.

During optimization analysis:

The CPU, memory, and storage graphs visible on the Scenario Planning display:

If the capacity of a resource fails to meet the demand, then the optimization analysis may fail. In this case, you need to add more capacity to the resources. Similarly, if the capacity subscribed to a resource is more that the allocated capacity, then you need to lower the subscription of the resources or increase the allocated capacity.

The Forecast graph displays the number of VMs that will reach their maximum capacity after 30, 60, and 90 days.

Note: The values of the graphs will change as you modify the optimization scenario.

The optimization analysis takes time to complete. This time is dependent on the volume of data passed for optimization analysis.

To create an optimization scenario:

  1. Define the scenario name and description. It is mandatory to define a scenario name before initializing the optimization analysis.
  2. You can modify the workload count, Datastore count, and capacity to be considered for the optimization analysis. Additionally, you can define the constraints affecting the optimization analysis.
  3. In the General section, define the following options:

    Analysis Period:

    Shift Name:

    Click View List to view the list of workloads that have insufficient data.

  4. In the Placement Options section, define the following options:

    Fixed VM Placement:

    Use SPECint for CPU Normalization:

    Storage Optimization:

    Fixed vDisk Placement:

    Note: This option will be deactivated if you do not want storage data to be considered during optimization.

    Place Workloads Based On:

    Note: If you select VM placement based on the configured capacity of the VMs, SHO does not consider any headroom during optimization analysis.

    For a VM, if the time for which the data is available is less than the specified threshold percentage of the defined analysis period, SHO ignores resource usage data and does VM placement based on the configured capacity. A pop-up window appears with the names of such VMs when you open the Optimization Scenario page. The threshold percentage of the analysis period is defined on the Thresholds tab of the Configurations View page. For more information, see Defining Thresholds.

    Workloads Considered for Placement:

  5. In the Workload section, define the following options:

    Recommended VM Size:

    Note: The CPU and memory headroom defined for a particular Group as a constraint overrides the headroom defined on this page.

    If you do not select this option, SHO performs VM placement based on the current VM size.

  6. In the VM Hosts section, define the CPU and Memory subscription percentage.
    Subscription of resources is the percentage of capacity allocated to a VM out of the total capacity reserved for the VM.
  7. In the Storage section, define the percentage of Datastore subscription to be allocated in the Storage Subscription field.
  8. Click Optimize. The optimization analysis begins and SHO the Scenario Manager view.

    Note: Click Discard Scenario to discard the optimization scenario and return to the Inventory page.

The results for the optimization analysis are displayed on the Result Summary page. For more information, see Viewing Results.


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