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The default value of 80% was based on real world input from companies using our product. It also assumes management tasks are admin initiated. Further productivity gains can be obtained by delegating the provisioning tasks down stream to less skilled administrators or to the resource consumers directly.
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Percentage of VMs that are provisioned on an annual basis without appropriate business justification. - The default value of 5% represents and average based on the customers we have worked with combined with input from industry analysts.
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Percentage of the VMs which are over-provisioned. - Advice for Determining a Value: The default value of 10% is based on input from multiple companies. However the response to this assumption varied significantly with the companies that we talked with. depending on the controls that are present in your environment the values compared to the default may vary by as much as 10-20%.
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Amount of resources (CPU, Memory, Storage) that an average VM is over-provisioned by, expressed as a percentage.
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The default value of 10% can be adjusted to better reflect your environment.
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Virtualization is a big paradigm shift. Many of the system management tools and processes that worked fine in the physical world cannot adequately address the new challenges of the virtual world. Without the appropriate policies and controls in place, most companies have slowed the deployment of virtualization in order to avoid losing control of their virtual infrastructure.
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