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What-If VM Deployment Planning for VMware (model existing VMs)

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This report calculates the number of additional VMs that your existing infrastructure (vSphere clusters and datastores) can support before the resource utilization reaches the specified threshold value. The report evaluates total capacity of your infrastructure and provides estimation of how many sample VMs of a certain profile can be added without causing the specified resource utilization threshold to be breached. In this report, you can choose sample VMs from the existing environment.

Example Output

The report can be scoped at one or more vSphere clusters and/or one or more datastores in your environment. In this example, the report calculates how many VMs of the specified profile can be added to your infrastructure (taking into account free space threshold set to 20%).

To run this report:

1.From the Performance Data From list, choose Previous month > First day.
2.From the Forecast Horizon list, choose a date in future (30 days from today).
3.Leave the Scope section without changes.
4.In the Workload section, select the VM which you want to use as a sample.
5.In the Threshold: Datastore Free Space (%) field, type 20.
6.Click Run to view the report.

What-if VM Deployment Planning for VMware Report Settings

The Virtual Infrastructure Described table will provide an overview for all datastores and clusters included in the report scope: total number of datastores and clusters, total number of hosts, total number of CPU cores, total capacity, amount of free and provisioned space, amount of space consumed by unknown files and the number of VMs residing on the datastores (note that this number will include both VMs and VM templates).

The Sample Workload Described table will provide an overview for the virtual machine(s) used as a sample for calculating the number of VM sets: total number of VMs, total vCPUs, total CPU usage, memory usage and number of IOPS.

The Constraining Resource per Each Object table will provide the resource for which the specified threshold will be breached first within the forecast period and number of additional VMs of the specified profile that your infrastructure will be able to support on the forecast horizon date:

What-if VM Deployment Planning for VMware Report Output

The Performance Forecast tables reveal the predicted free space usage and IOPS numbers and shows how many VMs you can add, taking into account available resources in future.

What-if VM Deployment Planning for VMware Report Output Details

In this example, the report shows that datastore free space is the constraining resource for the datastore. The datastore can host 11 more VMs in terms of free space, whereas in terms of IOPS, you can add 297 VMs.

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