The ultimate millennium goal of sustainable development pared with environment factors has been challenging for mankind for centuries. The quest to find resources for present human needs while preserving for next generation has been indeed a struggle. With the increased influence of Information Technology to the business, consumer patterns and general life created new energy need. It’s estimated about 900 million to 1 billion computers running now and estimated it will increase to 2 billion by the year 2014.
The energy need of computers for approximately 1 billion running computers is so great, that an emphasis on adopting green IT strategies towards energy consumption while increasing the efficiency of computing is very desirable. Green IT can be described as ”the study and practice of designing, manufacturing, using, and disposing of computers, servers, and associated subsystems—such as monitors, printers, storage devices, and networking and communications systems—efficiently and effectively with minimal or no impact on the environment.”
There are number of Green IT approaches
- Algorithmic Efficiency- Algorithmic has a wide impact on carbon requirement of a computer. Computing functionality is entirely based on the effectiveness and efficiency of trade offs. For an example even average Google search require co2 carbon dioxide, this is due to the algorithmic impact.
- Effective Resource allocations - The energy requirement when routing data at the network traffic level. Very effective algorithmic approaches can reduce the energy consumption quite significantly. Simply, these improved algorithms reduce the number of computing cycles needed for allocation of network traffic.
- Virtualization- This is comprised of working several hardware units as one virtually. With virtualization, system administrators are able to combine several physical drives into one powerful unit.
- Terminal servers - central operating in the server, client processing is handled by the server end and the consumption is handled at the server. Examples of terminal server software include Terminal Services for Windows and the Linux Terminal Server Project (LTSP) for the Linux operating system.
- Power management- Open standard features such as The Advanced Configuration and Power Interface (ACPI allows an operating system to directly control the power-saving aspects of hardware. These automatically turn off components such as monitors and hard drives after set periods of inactivity. In addition, a system may hibernate, where most components (including the CPU and the system RAM) are turned off.
- Operating system support- several years ago the most popular operating system Windows doesn’t support many features to limit the PC power consumption. But with power management feature since the Windows 95, such as monitor low power state, hibernate and many other power management features enabled preserving energy at operating system level.
- Hardware units (Power supply, Storage, Video Card)-Typically with the increase of technology manufacturers are able to produce more effective devices with less energy needs. The power requirements of these electronic devices significantly reduce and has impact on the green energy and harness of the IT.
Although there are number of approaches with wide potential and significant importance to the industry, the most common approach is selecting software & hardware which supports power management features such as virtualizations, operating systems, utilizing carbon neutral products to minimize the impact on carbon consumption of an organizations. It is utterly important to adopt long term green policies & strategies towards betterment of our next generation.























