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Article #357: Seven Design Considerations for a Green Data Centre

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IT departments are under increasing Adopting an alternating hot aisle/cold
scrutiny and pressure to deliver aisle layout is optimal and can correct
environmentally-sound solutions. Large many cooling problems in a typical data
data centres are one of the most centre. By implementing a hot/cold aisle
significant energy consumers in an layout, equipment is spared from having
organisation's IT infrastructure, so any hot air recirculated and thereby
measures that you can take to reduce this eliminating risk of an outage through
consumption (and therefore also carbon device failure. Also, by having a common
dioxide emissions) will have a positive hot aisle, you have the ability to
impact on your organisation's contain areas where heat density is high,
environmental footprint. such as racks with blade servers, and
The construction and operation of a green deal with the heat in a specific manner.
data centre involve advanced technologies This allows for multiple heat rejection
and strategies, for example methods to be in use within one data
- Reducing the power consumption of the centre.
data centre 4. Use appropriate technology
- Minimising the footprints of the In taking a green approach to your data
buildings centre, your evaluation of products is no
- Maximising cooling efficiency longer just a price versus performance
- Using low-emission building materials, comparison. It is important to
carpets and paints incorporate the total costs of the
- Installing catalytic converters on environment into the calculation, which
backup generators then also includes costs for energy
- Using alternative energy technologies consumption.
such as photovoltaic electrical heat 5. Take a green perspective on ILM
pumps and evaporative cooling Information Lifecycle Management (ILM) is
The consumption of energy is considered the optimum allocation of storage
the dominant - and often the only - resources that support a business. Every
factor in defining whether or not a element of information in an organisation
facility is green. IT executives has a useful lifespan, and this can range
therefore need to start investigating from a voice conversation to certain
alternative ways of building legal and medical records. By
energy-efficient data centres. implementing an ILM strategy, you have
By following these seven simple steps, IT the ability to create greater
executives can come closer to achieving efficiencies in data storage, which in
their vision of a green data centre: turn lead to greater efficiencies in
Seven Simple Steps elements such as power consumption.
1. Think green 6. Investigate liquid cooling
Environmental concerns are front of mind To meet the challenges of blade servers
throughout society today, and you can and high-density computing, more
also take a 'green' attitude towards your organisations are realising the need for
data centre, both in terms of current effective cooling and heat management
state and also future planning. Also, solutions. Many are welcoming liquid
many data centre vendors and service cooling systems into their
providers are providing green infrastructures to achieve better cooling
alternatives - factor these options in efficiency, while others may find it
when negotiating new contracts and difficult to fathom pipes of running
planning upgrades. water snaking through the plenums of
Incorporate the green vision in your their data centres.
planning - your future will be impacted 7. Utilize greener energy sources
by legislation, standards and market Many energy utilities are now offering
demands in this area. greener options for customers, with power
2. Virtualise and consolidate from sustainable sources. For example, in
A virtualisation and consolidation the United States, the U.S. Environmental
project is often a step in the right Protection Agency (EPA) has formed the
direction towards green computing. Green Power Partnership, which encourages
Research indicates that a server often and assists organizations to buy green
only utilises between 5 and 15% of its power and reduce their impact on the
capacity to service one application. With environment. Major economies in Asia have
appropriate analysis and consolidation, accepted the Kyoto Protocol to control
many of these low utilisation devices can carbon emission however only Japan has
be combined into a single physical committed to a reduction by 2012. The
server, consuming only a fraction of the awareness on social responsibility and
power of the original devices and saving opportunity to save operational cost has
on costs, as well as taking a step raised the bar on awareness and
towards a more environmentally-friendly willingness to adopt a more green
data centre environment. approach towards utilities.
3. Design a best practice floor plan






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