Digital Realty Trust is the largest acquirer, developer, owner and operator of data centers in the world. While some may argue that bigger is not always better, in the world of data centers, as you will see, size does matter in our ability to serve as your secure choice for your next data center facility. Digital Realty Trust’s market position and financial strength enable us to deliver clear and tangible benefits that our competitors simply cannot deliver.
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With estimates of power requirements per rack projected to be as high as 53 kW many existing data centers are on an accelerated track toward obsolescence. As a result, today’s data center professionals are faced with the need to effectively remove heat from within the facility to ensure the maximum degree of operational uptime for their mission critical applications.

Quote from the white paper:
Cooling your data center offers you a continuum of options. These can range from making simple and cost-effective physical modifications to your existing facility to incorporating more costly solutions like in rack cooling. In some instances a completely new facility may be required to support more intensive computing applications. The solution you select will be based on the unique needs of your organization.