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Cost Model for Planning, Development and Operation of a Data Center

Patel, Chandrakant D.; Shah, Amip J.


Keyword(s): data center; data center cost model; energy efficient data center; data center costs; data center cost of operation

Abstract: The emergence of the compute utility and growth in data center based compute services necessitates an examination of costs associated with housing and powering the compute, networking and storage equipment. The cost model must take into account the complexity in power delivery, cooling, and required levels of redundancies for a given service level agreement. The cost of maintenance and amortization of power delivery and cooling equipment must also be included. Furthermore, the advent of slim servers such as "blades" has led to immense physical compaction. While compaction can enable consolidation of multiple data centers into one, the resulting high thermal power density must be addressed from power delivery and cooling point of view. Indeed, the industry is abound with figures on sizing the total future data center capacity based on power loading per unit area, e.g. 500 W/m2 today moving to 3000 W/m2 in the future. However, in doing so, one needs to be mindful of the actual usage of the critical data center space with reference to the total rated and commissioned capacity. Therefore, a simple cost model that adequately captures the total cost of space and power based on utilization as well as recurring costs of "burdened" delivery is needed. This technical report shows a cost model that can be used in planning, developing and operating a data center. Techniques for "right" provisioning the data center are covered in the final chapters with reference to other reports published by the HP Labs team.

36 Pages

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