The IT industry does not stop here. The slogan “Green IT” suggests to the users in this context, the image of an environmentally friendly computer. But what does this term actually look exactly This article looks at the “green IT” more accurate. Green IT not only describes the composition of the components that make up computer systems, but also refers to the ability of an IT environment, save power. Concretely, this means that have been grouped under the term referred to two completely different topics. Let us turn first to the toxins that are in the computers and network components. In this context, several important questions: What are harmful substances in a device How much of that is the relevantProduct – such as a printer – in service available Where the pollutant limits that are trying to clarify what values arise from threats to the health of users The fact is that all IT components contain harmful ingredients. These include lead, cadmium, chromium, mercury and halogens. While there is a long time aspiration of many manufacturers, the proportion of the pollutants, which offers lower them install in their devices – Fujitsu Siemens has been around 15 years in “green motherboard” with a reduced percentage of contaminants – the components presented in this context but could never really penetrate the market. This trend seems with the growing environmental awareness of many users, and new state requirements (more on that later reversed), which in turn motivated many manufacturers to jump on the green train. For example, Intel has announced in the first half of this year to produce its processors in future without the lead. Apple pushes intosame horn and recently issued an opinion in which Steve Jobs pointed to several pages on what his company makes efforts to eliminate harmful substances in its products and to dispose of old computers. The state requirements pollutants in IT components not only in the manufacture and operation of the devices of great importance, but also play an important role when it comes to recycling old computer systems. In this context, the European Union Directives RoHS (Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment) and WEEE (Waste Electrical andElectronic Equipment) is important. RoHS prohibits the use of certain substances in the manufacture and processing of electrical and electronic components. In Germany, the relevant regulations were introduced on 1 July 2006 in force. The legislature followed with the objective of the measure, the IT design products so that arising out of waste as few difficulties. This approach is certainly useful if onetake into account that the majority are completely obsolete IT equipment in a few years and therefore end up relatively quickly to the garbage. Specifically, the RoHS directive, the substances of lead, cadmium, hexavalent chromium wants to ban polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDEs) and mercury from the IT components. These are regarded as highly dangerous for the environment in landfills and can barely hold the transfer in nature. Furthermore, it is difficult to mining, construction materials, therefore, to accumulate in the natural cycle. It was originally intended to ban those substances in general, this requirement could not be implemented, but production techniques, so now are some limits, namely, a maximum 0.01 percent by weight for cadmium and a maximum of 0.1 weight percent for each of the other substances. To make the changeover of production easily possible, however, are still a number of exemptions in force so that it will take a while to RoHS really applies, as theLegislators vorgesehen.Die WEEE Directive aims to reduce the contrast, the Schrottaufkommen itself and expands the responsibility of manufacturers for their products. So it is today so that IT companies are absolutely compelled by the legislature to reduce the pollutant content in their products and to take back old equipment. This area of green IT is driven, therefore, not only the goodwill of the company, but also by legal constraints. Power-saving products to save energy have been around for a long time as different technologies, such as APM (Advanced Power Management) or ACPI (Advanced Configuration and Power Interface). APM was developed in the early 90s by Intel and Microsoft, and pursues the approach of energy-saving features (such as the Heruntertakten of processors, or temporarily disabling unneeded computer components) exclusively controlled by the BIOS and the hardware allow. If this task is performed by the ACPI operating system. Since the latter a better overview of the actualActivity has a computer, it succeeded in recent years, ACPI, APM displace almost completely. So long as the power saving features are also, they have really gained ground only in recent years, important. Sooner to save energy especially for mobile components played a role, which were powered by a rechargeable battery. Today, however, both power consumption and electricity costs in data centers has increased so much that it has become essential for service providers and enterprises to configure their networks so that they work as energy efficient. Apart from the above-mentioned methods APM and ACPI to play in this context, the use of new power-efficient processors play an important role to realize the savings, according to the manufacturers of up to 90 percent. Here the relevant power management techniques are called “Cool’n’Quiet (AMD) and” Speed Step “(Intel) and should enable a very efficient processor operation, because the CPUs that usually work only at half power, and only when needed in the power-hungryFull-speed mode switch. Apart from the above-mentioned factors, it also makes sense if the administrators just take their cooling systems in data centers under the microscope and to consolidate the hardware as much as possible, so that no systems are running consume (and current), which are actually not necessary. In this regard, including the virtualization an important role. A few more details on energy efficiency: Especially when dealing with desktop computers can save energy in a very relevant measure, if the systems are working outside of working hours in standby mode, but are completely disabled. Even low power modes such as suspend to RAM or Suspend to Disk and controlled by the operating system idle process can play its part in reducing the cost of electricity. Last but not least, administrators should also take care to set date and high quality power supplies, as their efficiency has improved significantly in recent years. The power saving is not all. For businesses, there are two differentOpportunities, their consumption of “green design” to. In addition, power-efficient technologies used, it can bring in some regions is definitely something to rely on alternative energy such as hydropower. This reduces fuel consumption while not, but reduces emissions and is therefore also to the field of green IT. General, however, that the measures for saving energy are greater, a development which is justified by economic conditions. Taking into account the legal requirements of the European Union in pollution control and the economic pressures to save energy, urges arising from increased power requirements and higher prices, so the result on that green IT is a descriptor, the processes that have taken place anyway, summarizes publicity.
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