There are dozens of reasons why we’re called


IT cooling experts Here are four of them:


Explanation of Cooling and Air Conditioning Terminology


for IT Professionals White Paper 11 Revision 3


>Executive summary


As power densities continue to increase in today’s data centers, heat removal is becoming a greater concern for the IT professional. Unfortunately, air conditioning terminology routinely used in the cooling industry is unnecessarily complicated. This complexity makes it difficult and frustrating for IT professionals to specify cooling requirements and even makes it difficult to discuss current cooling system performance with contractors, engineers, and maintenance personnel. This paper explains cooling terms in common language, providing an essential reference for IT professionals and data center operators.


Contents Introduction


HVAC terms


Conversion tables Conclusion Resources


Ten Cooling Solutions to Support High-Density


1 11


15 17 18


>Executive summary


High-density servers offer a significant perfor- mance per watt benefit. However, depending on the deployment, they can present a significant cooling challenge. Vendors are now designing servers that can demand over 40 kW of cooling per rack. With most data centers designed to cool an average of no more than 2 kW per rack, innovative strategies must be used for proper cooling of high-density equip- ment. This paper provides ten approaches for increasing cooling efficiency, cooling capacity,


and power density in existing data centers. Contents


Perform a ‘health check’ 2 Maintain the cooling system 2 Install blanking panels


7


Remove sub-floor blockages 5 Separate high-density racks 6 Set up hot aisle/cold aisle 7 Align CRACs with hot aisles 8 Manage floor vents


8


Install airflow assist devices 10 Install row-based cooling 11


Server Deployment White Paper 42 Revision 7


Cooling Strategies for IT Wiring Closets and


Small Rooms White Paper 68 Revision 1


Cooling for IT wiring closets is rarely planned and typically only implemented after failures or overheating occur. Historically, no clear standard exists for specifying sufficient cool- ing to achieve predictable behavior within wiring closets. An appropriate specification for cooling IT wiring closets should assure compatibility with anticipated loads, provide unambiguous instruction for design and installation of cooling equipment, prevent oversizing, maximize electrical efficiency, and be flexible enough to work in various shapes and types of closets. This paper describes the science and practical application of an improved method for the specification of cooling for wiring closets.


>Executive summary


Contents Introduction


The basic principle of heat removal


The five methods of cooling closets


Effect of UPS on closet cooling system


Conclusion


The Advantages of Row- and Rack-Oriented Cooling Architectures for


2


Suitable operating temperature for wiring closets


2 3 6 13


Attributes of effected fan-assisted ventilation 13


15 >Executive summary


Latest generation high density and variable density IT equipment create conditions that traditional data center room cooling was never intended to address, resulting in cooling systems that are inefficient, unpredictable, and low in power density. Row-oriented and rack-oriented cooling architectures have been developed to address these problems. This paper contrasts room, row, and rack architec- tures and shows why row-oriented cooling will emerge as the preferred solution for most next generation data centers.


Contents Introduction


2


Room, row, and rack-based cooling architectures 2


Benefit comparison of cooling architectures 7


Special issues Conclusion Resources


13 18 19


Data Centers White Paper 130 Revision 1


providing an essential reference for IT professionals and data center operators.


oversizing, maximize electrical efficiency, and performance with contractors, engineers, cooling system 13


becoming a greater concern for the IT professional. Unfortunately, air conditioning


HD computing and virtualization make cooling a critical IT topic. Yet cooling remains challenging to understand. You must get cooling right, though, because it’s critical for ensuring uptime and keeping energy costs in check.


Server Deployment Support High-Density Ten Cooling Solutions to


Fortunately, the experts at APC by Schneider Electric™ know cooling! We’re pleased to share our expertise in our one-stop solution for easily learning the ins and outs of cooling options and best practices. Our free Cooling Guide includes four must-have white papers on essential cooling issues.


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