Energy Logic
   HOME

TheInfoList



OR:

Energy Logic is a vendor-neutral approach to achieving
energy efficiency Energy efficiency may refer to: * Energy efficiency (physics), the ratio between the useful output and input of an energy conversion process ** Electrical efficiency, useful power output per electrical power consumed ** Mechanical efficiency, a rat ...
in
data centers A data center is a building, a dedicated space within a building, or a group of buildings used to house computer, computer systems and associated components, such as telecommunications and computer data storage, storage systems. Since IT opera ...
. Developed and initially released in 2007, the Energy Logic
efficiency Efficiency is the often measurable ability to avoid making mistakes or wasting materials, energy, efforts, money, and time while performing a task. In a more general sense, it is the ability to do things well, successfully, and without waste. ...
model suggests ten holistic actions – encompassing IT equipment as well as traditional data center infrastructure – guided by the principles dictated by the "
Cascade Effect A cascade effect is an inevitable and sometimes unforeseen chain of events due to an act affecting a system. If there is a possibility that the cascade effect will have a negative impact on the system, it is possible to analyze the effects with a ...
."


Energy Logic Assumptions

The first iteration of the Energy Logic model was introduced by
Emerson Network Power Emerson may refer to: People * Emerson (surname), a surname (and list of people with that name) * Emerson (given name), a given name (and list of people with that name) * Ralph Waldo Emerson, an American philosopher and essayist Places Australia ...
on November 29, 2007. Described as a “new approach to energy optimization,” the model was developed in response to industry feedback suggesting a growing emphasis on promoting efficiency initiatives, without compromising the
performance A performance is an act or process of staging or presenting a play, concert, or other form of entertainment. It is also defined as the action or process of carrying out or accomplishing an action, task, or function. Performance has evolved glo ...
and reliability of the data center. The Energy Logic data center efficiency model was developed based on research and modeling of 5,000 square foot data center, including average IT equipment densities, common data center and facility infrastructures (power, cooling, etc.) and their collective energy draw. Energy draw for the 5,000 square foot data center model was based on the following assumptions: *
Server Server may refer to: Computing *Server (computing), a computer program or a device that provides requested information for other programs or devices, called clients. Role * Waiting staff, those who work at a restaurant or a bar attending custome ...
refresh rate: 4 to 5 years ** Data center has mix of servers ranging from new to 4-years old * No
virtualization In computing, virtualization (abbreviated v12n) is a series of technologies that allows dividing of physical computing resources into a series of virtual machines, operating systems, processes or containers. Virtualization began in the 1960s wit ...
or blades * No high-
density Density (volumetric mass density or specific mass) is the ratio of a substance's mass to its volume. The symbol most often used for density is ''ρ'' (the lower case Greek letter rho), although the Latin letter ''D'' (or ''d'') can also be u ...
loads ** Average density: 3 kW/rack (120 W/sq. ft.) * Total compute load: about 600 kW * UPS configuration: 2x750 kVA, 1+1 redundant * Hot-aisle/cold-aisle configuration * Floor-mount cooling connected to building chilled water plant * MV transformer (5 MVA) at building entrance with switchgear


The Cascade Effect

Based on the benchmarks established by the 5,000 sq. ft. model, Emerson Network Power recommended improvements to IT and data center infrastructures capable of maximizing total energy savings by leveraging the “
cascade effect A cascade effect is an inevitable and sometimes unforeseen chain of events due to an act affecting a system. If there is a possibility that the cascade effect will have a negative impact on the system, it is possible to analyze the effects with a ...
.” For the purposes of the Energy Logic model, the cascade effect assumes that for every one watt of energy saved at the server component level, a data center can expect to realize up to 2.84 Watts in cumulative energy savings as the initial reduction “cascades” through the infrastructure (DC-DC, AC/DC,
Power Distribution Electric power distribution is the final stage in the delivery of electricity. Electricity is carried from the transmission system to individual consumers. Distribution substations connect to the transmission system and lower the transmission v ...
, etc.).


Energy Logic Actions

The Energy Logic model proposes ten vendor-neutral actions that are forecast to reduce cumulative energy consumption by up to 50 percent (reducing energy consumption to 585 kW from the data center's initial 1,127 kW load). The ten recommended actions prescribed in the Energy Logic model are: # Integrating IT equipment with low-power
processors Processor may refer to: Computing Hardware * Processor (computing) ** Central processing unit (CPU), the hardware within a computer that executes a program *** Microprocessor, a central processing unit contained on a single integrated circuit ( ...
(yields a 10 percent savings) # Deploying high efficiency
power supplies A power supply is an electrical device that supplies electric power to an electrical load. The main purpose of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. As a r ...
matched to power needs (yields a 12 percent savings) # Implementing a server power management system/strategy (yields an 11 percent savings) # Deploying
blade servers A blade server is a stripped-down server computer with a modular design optimized to minimize the use of physical space and energy. Blade servers have many components removed to save space, minimize power consumption and other considerations, whil ...
(yields a 1 percent savings) # Implementing server
virtualization In computing, virtualization (abbreviated v12n) is a series of technologies that allows dividing of physical computing resources into a series of virtual machines, operating systems, processes or containers. Virtualization began in the 1960s wit ...
throughout the IT infrastructure (yields a 14 percent savings) # Establishing an efficient power distribution architecture (yields a 3 percent savings) # Implementing data center cooling best practices (optimizing airflow, using optimal set points, reducing energy waste, etc.) (yields a 2 percent savings) # Deploying variable capacity cooling equipment (including chilled-water and direct-expansion systems) (yields a 7 percent savings) # Deploying high-density supplemental cooling (yields an 18 percent savings) # Implementing a data center monitoring and optimization strategy (yields a 2 percent savings) The Energy Logic model also suggests additional opportunities for energy savings, including: * Identifying and disconnecting unused servers * Consolidating
data storage Data storage is the recording (storing) of information (data) in a storage medium. Handwriting, phonographic recording, magnetic tape, and optical discs are all examples of storage media. Biological molecules such as RNA and DNA are con ...
* Implementing economizers for subsidized cooling * Monitoring and reducing energy losses tied to facility infrastructure ( generators, lighting, perimeter access, etc.)


Energy Logic 2.0

In 2012, Emerson Network Power introduced an update to the Energy Logic model, to take into consideration advances in IT and data center infrastructure technology. Using the same 5,000 square foot data center benchmarked in the 2007 model, Energy Logic 2.0 updates the ten prescribed actions to reflect current technologies and average equipment efficiency. As a result, the updated actions are forecast to yield energy savings up to 74 percent (reducing energy consumption from 1,543 kW to 408 kW in the model data center). The ten updated actions include: # Deploying low-power components (yields a. 11.2 percent energy savings) # Deploying high-efficiency power supplies matched to power needs (yields a 7.1 percent energy savings) # Implementing a server power management system/strategy (yields a 9.4 percent energy savings) # Establishing an ICT architecture (yields a 3.5 percent energy savings) # Implementing a server virtualization and consolidation strategy (yields a 29 percent energy savings) # Optimizing the data center's power architecture (yields a 4.1 percent energy savings) # Implementing a temperature and airflow management strategy (yields a 5.2 percent energy savings) # Deploying variable-capacity cooling equipment (including chilled-water and direct-expansion systems) (yields a 2.6 percent energy savings) # Establishing a high-density cooling infrastructure (yields a 1.5 percent energy savings) # Implementing a comprehensive Data Center Infrastructure Management (DCIM) strategy


References


External links


Energy Logic (official page)Emerson Network Power Company Web Site
{{Webarchive, url=https://web.archive.org/web/20130302012118/http://www.emersonnetworkpower.com/en-US/Brands/Liebert/Pages/default.aspx , date=2013-03-02 Computer data Data centers