White Papers

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ATTENTION: For instructions on how to properly link to these white papers. click here 12 result(s) found.
Number Title & Abstract
Pdf
WP-265 v0
Liquid Cooling Technologies for Data Centers and Edge Applications
Increasing IT chip densities, a focus on energy efficiency, and new IT use cases like harsh edge computing environments are driving the interest and adoption of liquid cooling. In this paper we present the fundamentals of liquid cooling, describe the advantages over conventional air cooling, and explain the 5 main direct to chip and immersive methods. To help guide the selection of the appropriate liquid cooling method for a given need, we explain the key attributes that must be considered.
Pdf
WP-279 v0
Five Reasons to Adopt Liquid Cooling
IT equipment chip densities has been the commonly-discussed driver for adopting liquid cooling. But, there are four other reasons why data center owners should consider liquid cooling including low PUE targets, space constraints, harsh IT environment, and water restrictions. This paper describes these reasons. With this information, data center owners can make an informed decision on whether liquid cooling has advantages for their application.
Pdf
WP-280 v0
Practical Guide to Ensuring Availability at Edge Computing Sites
IT stakeholders recognize the need for computing at distributed sites, where part or all of their business operations take place. Assessing the criticality of these edge sites should reveal which sites are in greater need of availability improvement. Schneider’s experience with edge computing environment assessments reveals a list of practical actions that improve the availability of IT operations by improving the physical infrastructure systems supporting the IT. This paper provides specific availability improvements broken down by eight key systems including power, cooling, physical security, environment, and management.
Pdf
WP-272 v0
A Framework for How to Modernize Data Center Facility Infrastructure
Aging data centers represent a downtime risk to business operations. In this paper, we lay out a framework for modernizing a facility. This framework includes (1) defining performance standards, (2) benchmarking the facility to identify gaps and health risks, (3) determining modernization options, and (4) prioritizing actions based on business objectives. Modernization should include not only the hardware, but also the software management tools, and operations & maintenance programs. This complete approach ensures the facility continues to meet its IT objectives, including availability, efficiency, and operational cost targets.
Pdf
WP-277 v0
Solving Edge Computing Infrastructure Challenges
Edge compute (distributed IT) installations have become increasingly business critical. Deploying and operating IT at the edge of the network, however, comes with unique challenges. Solving them requires a departure from the traditional means of selecting, configuring, assembling, operating, and maintaining these systems. This paper describes a new, emerging model that involves an integrated ecosystem of cooperative partners, vendors, and end users. This ecosystem and the integrated micro data center solution it produces, help mitigate the unique challenges of edge applications.
Pdf
WP-276 v0
Switching Transients and Surge Protection for MV Transformers in Data Centers
Voltage transients in MV power systems have been observed to contribute to failures of both power and instrument transformers in data centers in recent years. This white paper provides a background regarding the nature of the transient problems, as well as a discussion of factors that may put transformers at risk. Several common solutions are available to help safeguard transformers, and each of these is discussed along with some of the pros/cons of each solution type.
Pdf
WP-232 v0
Efficiency Analysis of Consolidated vs. Conventional Server Power Architectures
Open-source IT systems, like those designed by the Open Compute Project (OCP), are redefining how power is distributed within an IT rack by replacing internal server power supplies with a centralized rack-level power supply. In this paper, we investigate the efficiencies of conventional internal server PSU architectures and centralized rack-level PSU architectures (12VDC and 48VDC). While many believe that consolidating power supplies leads to significant efficiency gains, we found otherwise. With best-in-class components, the consolidated 12VDC rack-level PSU architecture provides a small incremental energy efficiency improvement over the conventional architecture. And consolidating at 48VDC provides another small incremental energy efficiency improvement over 12VDC.
Pdf
WP-273 v0
Guide to Writing an RFP for Data Center Facility Operation Services
Some organizations choose to outsource the management of their data center facility operations to a third party. Developing and managing the request for proposal (RFP) process is critical in ensuring a data center is operated and maintained efficiently and effectively. Poorly written and managed RFPs can make data centers costlier to run and increase risk of downtime. This paper provides guidance on how to properly write and manage RFPs ensuring qualification criteria are well-defined, performance requirements are clearly communicated, and vendor responses are de-tailed and complete enough to enable an objective and thorough evaluation.
Pdf
WP-139 v1
Cooling Entire Data Centers Using Only Row Cooling
Row cooling is emerging as a practical total cooling solution for new data centers due to its inherent high efficiency and predictable performance. Yet some IT equipment in data centers appears incompatible with row cooling because it is not arranged in neat rows due to the nature of the equipment or room layout constraints, suggesting the ongoing need for traditional perimeter cooling to support these loads. This paper explains how a cooling system comprised only of row coolers, with no room cooling system, can cool an entire data center, including IT devices that are not in neat rows.
Pdf
WP-61 v2
Electrical Distribution Equipment in Data Center Environments
IT professionals who are not familiar with the concepts, terminology, and equipment used in electrical distribution, can benefit from understanding the names and purposes of equipment that support the data center, as well as the rest of the building in which the data center is located. This paper explains electrical distribution terms and equipment types and is intended to provide IT professionals with useful vocabulary and frame of reference.
Pdf
WP-229 v1
Battery Technology for Data Centers: VRLA vs. Li-ion
Lithium-ion battery prices have decreased over the years and are now becoming a viable option for data center UPS. This paper provides a brief overview of li-ion batteries in comparison to VRLA batteries for static UPS applications, including optimal chemistries and technologies. A 10-year total cost of ownership (TCO) analysis is provided showing li-ion is 39% less than VRLA despite their capital cost premium. A sensitivity analysis reveals the TCO drivers. Finally we discuss li-ion batteries for retrofit and new UPS applications and the effect of temperature on battery life, runtime, and cooling.
Pdf
WP-231 v1
FAQs for Using Lithium-ion Batteries with a UPS
Lithium-ion batteries offer several advantages over traditional lead acid batteries. Despite the benefits, the use of lithium-ion batteries in uninterruptable power supplies (UPSs or battery backups) is relatively new with valve-regulated lead acid batteries still the dominant energy storage technology used today. This will likely change as Li-ion costs continue to decrease, the benefits become more widely known, and manufacturers make their UPSs compatible. This paper serves to answer common questions about Li-ion batteries and their use in UPSs.