BY:-PANKAJ PRAKASH

DSSD0910_215

THE EVOLUTION OF GREEN IT

DEFINING GREEN IT

Environmentally responsible use of computers and related energy resources

Such practices includes:-The implementation of energy-efficient

central processing units (CPUs),Servers and peripherals

Reduced resource consumptionReduced use of harmful materials in

manufacturingProper disposal of electronic waste (e-waste).

IN OTHER WORDS…..

The positive relationship between the physical computer and its impact to the environments in which it moves through from cradle to grave

What is all the HYPE about “Going Green”?

SO WHY GREEN COMPUTING ?

Growing public environmental awareness

Increasing impacts on environmental and human health

Corporate social responsibilityEconomic impact

THE CURRENT SITUATION

Energy provisioning is arguably the most important business, geo-political, and societal issue of our time

Global Warming is influencing policies and laws which require energy usage and greenhouse emissions to be measured and controlled

The cost of energy and increases in IT power requirements present significant expense, supply, and handling challenges for data centers

POWER CONSUMPTIONA BIG ISSUE

As circuit speed increases, power consumption grows

Designing low power circuits has been the most important issue

Mobile applications demand long battery life

Low power consumption is listed as the second greatest challenge for the industry

THE POWER CONSUMPTION AND DATA CENTER

Where are the web pages you browse?

Data CenterOne single room in

Datacenter contains 100 Racks

1 Rack = 5 to 20 kW

Contributed to the 2000/2001 California Energy Crisis

InternetClient

Data CenterRacks

Why should companies consider going green?

The cost of energy is the top reason most

companies make the move toward Green IT

The energy consumed by data centers had more than

doubled over five year period

Over 40% of the costs associated

with data centers are attributed

to powering and cooling

computer systems

Approaches to green computing

Cradle to Grave approach

Software and deployment optimization

CRADLE TO GRAVE APPROACH

Full life-cycle analysis, not just the product on our desks

Looks at: Manufacturing Use during lifetime Disposal and reallocation

MANUFACTURING ISSUE

Average desktop computer with monitor requires 10 times its weight in chemicals and fossil fuels to produce

240 kg of fossil fuel for CRT monitor

266 kg of fossil fuel for LCD monitor

Extraction impacts – refining of petroleum for energy and plastic, mining and smelting of metals

Solvents in microchip fabrication – hydrochloric acid, hydrofluoric acid, arsenic, benzene and hexavalent chromium

MANUFACTURING-APPROACHES

Greener technology PBDE-free plastic lead-free soldering fewer toxic solvents Plastics labelled with recycling codes Less material used

Independent certification bodies e.g. TCO, Nordic Swan, EU Eco-label

USES ISSUE

Electricity consumption for desktops and peripherals

Fossil fuel power – Greenhouse gas emissions, mercury atmospheric pollution, SOX and NOX lead to acid rain and smog formation

Nuclear power – difficulties with long term management of radioactive wastes

APPROACHES TO USES ISSUE

New technology often more energy efficient Laptop 15W total LCD system: 80W total CRT system: down to 120W from 270W

Independent certification bodies e.g., TCO, Nordic Swan, EU Eco-label

Energy saver features are now standard

DISPOSAL :ISSUE AND APPROACHES

ISSUE:-Same toxins in manufacturing process can cause

environmental contaminationHuman health risksLead, barium, chromium, CNS disruptors etc. APPROACHE :-Recycling

Metal recovery Semi-precious metal recovery

SOFTWARE AND DEPLOYMENT OPTIMIZATION

Algorithm efficiency The efficiency of algorithms has an impact on the amount of

computer resources required for any given computing function.

Resource Allocation Algorithms can also be used to route data to data centers where

electricity is less expensive.

Virtualization Computer virtualization refers to the abstraction of computer

resources, such as the process of running two or more logical computer systems on one set of physical hardware.

Terminal Server Terminal servers have also been used in green computing. When

using the system, users at a terminal connect to a central server; all of the actual computing is done on the server, but the end user experiences the operating system on the terminal. These can be combined with thin clients, which use up to 1/8 the amount of energy of a normal workstation, resulting in a decrease of energy costs and consumption.

SOFTWARE AND DEPLOYMENT OPTIMIZATION

Operating System Support Microsoft Windows, has included limited PC

power management features since Windows 95.These initially provided for stand-by (suspend-to-RAM) and a monitor low power state. Further iterations of Windows added hibernate (suspend-to-disk)

Power Supply Desktop computer power supplies (PSUs) are

generally 70–75% efficient, dissipating the remaining energy as heat. An industry initiative called 80 PLUS certifies PSUs that are at least 80% efficient

Display CRT monitors typically use more power than LCD

monitors. Some newer displays use an array of  light emitting diode (LEDs), which further reduces power consumption.

LET US GO GREEN

“Going Green” programs can be simple or complex and include: Turning off computer at the end of the day Purchasing energy efficient office equipment Promoting virtual meetings and telecommuting Recycling paper products Converting to a “paperless” office Properly disposing of obsolete computer equipment

Examples of Green Technology

BIOS Configurable Management SystemsNew LCD screens versus old CRT monitors“Telework” programsElectronic Data Interchange (EDI)XML formattingEnergy Management Systems (EMS)