48GREEN YOUR IT
Astonishingly, computers are responsible worldwide for as much carbon emissions as the
entire airline industry – it is estimated that IT and airlines each account for around two percent
of global CO2 emissions.
A major difference between the two sectors, however, 70 percent, and sometimes as much as 90 percent.
is that with IT, just a few extremely simple measures With the rising cost of energy, this can mean savings
will result in immediate and significant savings in of $50-100, or even more, per PC and peripherals
energy consumption and money. per year. In a large enterprise, the amount of money
involved soon adds up to a hefty total.
A typical PC uses some 600 kilowatt-hours of
electricity per year, of which easily 400 kW-hours Other suggestions include:
are wasted by leaving the computer or its monitor or
printer on full power when the machine is essentially • Setting printers to print double-sided
standing idle. But in many large organizations, • Consolidating IT equipment (for example, sharing
computers and other equipment are left running all day a networked printer instead of having a number of
and night through the whole working week, pushing separate ones, or using PCs for video conferencing
energy consumption even higher. instead of having dedicated video conferencing
hardware)
But it is simplicity itself to utilize the power • Optimizing data centers and servers (for example
management settings built into every operating system by running several virtual servers on one machine,
to achieve the same, as well as to have the monitor rather than on separate computers, or by identifying
sleep rather than switch to an active screen-saver, and removing redundant servers and drives on the
which uses as much power as a screen that is fully network).
on. This can result in energy savings of at least 60-
Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64