We are aware of this metaphorical based technology called
‘cloud’ which helps companies to host their services over the internet. Cloud
allows companies to consume compute as a utility. It is similar to how a
telephone or water department works; you consume all power from this single
utility at a flexible price and not invest in your own power supply department.
Cloud Computing Data application centers consume voluptuous
amounts of energy, this in turn contributes to increased operational costs. A
less know fact data centers increase carbon emissions. Recent research shows
that excluding the energy consumed by the cooling equipment for the server, a
single 300-watt server running throughout a year can cost about $338, and can
emit around 1,300 Kilos CO2. According to a McKinsey report, $11.5 billion was
the total estimated energy bill for data centers in 2010.
If in the year 2010 1300 kilos of CO2 was produced then with
increase use and expansion of cloud computing data usage the production of CO2
will increase by 3 fold. Network based cloud computing is rapidly expanding as
an alternative to conventional office based computing. As cloud computing
becomes more widespread, the energy consumption of the network and computing
resources that underpin the cloud will grow. This is happening at a time when
there is increasing attention being paid to the need to manage energy
consumption across the entire information and communications technology (ICT)
sector. While data center energy use has received much attention recently,
there has been less attention paid to the energy consumption of the
transmission and switching networks that are key to connecting users to the
cloud.
With the increase in energy there is a rise in energy cost.
The data centers need a more efficient energy that reduces the production of
increased Carbon. Green cloud is a buzzword that refers to the potential
environmental benefits that information technology (IT) services delivered over
the Internet can offer society. The term combines the words green -- meaning
environmentally friendly -- and cloud, the traditional symbol for the Internet
and the shortened name for a type of service delivery model known as cloud
computing.
Green cloud which reduces the operational cost and carbon
footprints. Achieving green cloud computing is a complex and challenging task
as the applications and data requirements are growing. This means that more
servers and disks are required to carry out requests with given QoS (Quality of
service) within the defined SLA (Service Level Agreement). Hence green cloud
computing which not only saves energy but which also reduces operational cost
is the need of the hour.
According to market research conducted by Pike Research, the
wide-spread adoption of cloud computing could lead to a potential 38% reduction
in worldwide data center energy expenditures by 2020. The savings would be
primarily achieved by consolidating data centers and maximizing power usage
efficiency (PUE), improving recycling efforts, lowering carbon and gas
emissions and minimizing water usage in cooling the remaining centers.
Because so much of a data center’s energy expenditures
support data storage, the Storage Networking Industry Association (SNIA) has
promoted new technologies and architectures to help save energy. Advances in
SAS drive technologies, automated data duplication, storage virtualization and
storage convergence reduce the amount of physical storage a data center
requires, which helps decrease its carbon footprint and lower operating
expenditures (OPEX) and capital expenditures (CAPEX).
Information and communication technology (ICT) profoundly
impacts on environment because of its large amount of CO2 emissions. In the
past years, the research field of “green” and low power consumption networking
infrastructures is of great importance for both service/network providers and
equipment manufacturers. An emerging technology called cloud computing can
increase the utilization and efficiency of hardware equipments. It can
potentially reduce the global CO2 emission.
Because the color green is also associated with paper money,
the label green cloud is sometimes used to describe the cost-efficiency of a
cloud computing initiative.
