<span style="font-family:Verdana;">Develop</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;&qu...<span style="font-family:Verdana;">Develop</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">ment</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> of renewable energy (RE) and mitigation of carbon dioxide, as the two largest climate action initiatives are the most challenging factors for new generation green data center (GDC). Reduction of conventional electricity consumption as well as cost of electricity (COE) with preferred quality</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">of service (QoS) has been recognized as the interesting research topic in Information and Communication Technology (ICT) sector. Moreover, it becomes challenging to design a large-scale sustainable GDC with standalone RE supply. This paper gives spotlight on hybrid energy supply solution for the GDC to reduce grid electricity usage and minimum net system cost. The proposed framework includes RE source such as solar photovoltaic, wind turbine and non-renewable energy sources as Disel Generator (DG) and Battery. A hybrid optimization model is designed using HOMER software for cost assessment and energy evaluation to validate the effectiveness of the suggested scheme focusing on eco-friendly implication.</span></span></span>展开更多
Energy consumption in data centers has grown out of proportion in regard to the state of energy that’s available in the universe. Technology has improved services and its application. The need for eco-friendly energy...Energy consumption in data centers has grown out of proportion in regard to the state of energy that’s available in the universe. Technology has improved services and its application. The need for eco-friendly energy and increase in data centers performance brought about Green Computing into the energy consumption of data centers. Information technology has grown and eaten deep into the society that almost all the sectors if not all are dependent on information technology to move on. The consumption of power has increased greatly. In this research paper the techniques for optimizing energy in data centers for Green Computing would be discussed. This study intends to expose the limitations of existing security solutions for securing data centers by taking into consideration of limitations of existing security frameworks that cannot enhance the security of data centers.展开更多
研究目的:数据中心服务器入风口温度升高将导致出风口温度随之升高,同时某些正在运作的服务器在高温环境下排放气体,可能会导致热点或硬件损坏。高出风口和热点造成制冷机制的负担。因此服务器可以被用于入风口温度灵敏度分析,且导致热...研究目的:数据中心服务器入风口温度升高将导致出风口温度随之升高,同时某些正在运作的服务器在高温环境下排放气体,可能会导致热点或硬件损坏。高出风口和热点造成制冷机制的负担。因此服务器可以被用于入风口温度灵敏度分析,且导致热点的位于高入风口区域的服务器可以被重新定位。创新要点:预测出风口温度作为入风口温度的参考。根据预测的出风口温度重新定位服务器,从而降低最大出风口温度并节省用于制冷的能量消耗。研究方法:根据能量守恒原则,提出服务器再定位算法(算法1),用于测试一组异构服务器。讨论不同测试组别下异构服务器再定位前后出入风口温度的时间响应以及CPU使用率(图2-28)。重要结论:所提热感知再定位方法应用于数据服务中心服务器可实现节能2.1 k W·h。再定位之后的服务器出风口温度同构化程度更高。对于每对再定位服务器,可以减少77%热点产生可能性。展开更多
Energy generation and consumption are the main aspects of social life due to the fact that modern people’s necessity for energy is a crucial ingredient for existence. Therefore, energy efficiency is regarded as the b...Energy generation and consumption are the main aspects of social life due to the fact that modern people’s necessity for energy is a crucial ingredient for existence. Therefore, energy efficiency is regarded as the best economical approach to provide safer and affordable energy for both utilities and consumers, through the enhancement of energy security and reduction of energy emissions. One of the problems of cloud computing service providers is the high rise in the cost of energy, efficiency together with carbon emission with regards to the running of their internet data centres (IDCs). In order to mitigate these issues, smart micro-grid was found to be suitable in increasing the energy efficiency, sustainability together with the reliability of electrical services for the IDCs. Therefore, this paper presents idea on how smart micro-grids can bring down the disturbing cost of energy, carbon emission by the IDCs with some level of energy efficiency all in an effort to attain green cloud computing services from the service providers. In specific term, we aim at achieving green information and communication technology (ICT) in the field of cloud computing in relations to energy efficiency, cost-effectiveness and carbon emission reduction from cloud data center’s perspective.展开更多
The increase in computing capacity caused a rapid and sudden increase in the Operational Expenses (OPEX) of data centers. OPEX reduction is a big concern and a key target in modern data centers. In this study, the sca...The increase in computing capacity caused a rapid and sudden increase in the Operational Expenses (OPEX) of data centers. OPEX reduction is a big concern and a key target in modern data centers. In this study, the scalability of the Dynamic Voltage and Frequency Scaling (DVFS) power management technique is studied under multiple different workloads. The environment of this study is a 3-Tier data center. We conducted multiple experiments to find the impact of using DVFS on energy reduction under two scheduling techniques, namely: Round Robin and Green. We observed that the amount of energy reduction varies according to data center load. When the data center load increases, the energy reduction decreases. Experiments using Green scheduler showed around 83% decrease in power consumption when DVFS is enabled and DC is lightly loaded. In case the DC is fully loaded, in which case the servers’ CPUs are constantly busy with no idle time, the effect of DVFS decreases and stabilizes to less than 10%. Experiments using Round Robin scheduler showed less energy saving by DVFS, specifically, around 25% in light DC load and less than 5% in heavy DC load. In order to find the effect of task weight on energy consumption, a set of experiments were conducted through applying thin and fat tasks. A thin task has much less instructions compared to fat tasks. We observed, through the simulation, that the difference in power reduction between both types of tasks when using DVFS is less than 1%.展开更多
数字经济下,发展以“高能源效率、低环境影响”为主要特征的绿色数据中心(green data center,GDC)是应对碳中和挑战和促进社会可持续发展的重要举措。如何科学配置供需侧资源,在满足服务质量约束的前提下,充分利用数据用户的互动响应潜...数字经济下,发展以“高能源效率、低环境影响”为主要特征的绿色数据中心(green data center,GDC)是应对碳中和挑战和促进社会可持续发展的重要举措。如何科学配置供需侧资源,在满足服务质量约束的前提下,充分利用数据用户的互动响应潜力促进系统提质增效,是未来公有型GDC规划面临的难点。为此,该文基于信息-物理-社会耦合视角,在深入分析不同类型数据负载运行特性的基础上,引入后悔度匹配方法模拟数据用户参与GDC需求响应(GDC demand response,GDC-DR)意愿的中长期动态演化。基于动态预想场景,综合考虑数据用户参与GDC-DR意愿等内生不确定性和可再生能源发电出力、数据负载需求等外生不确定性的影响,提出一种GDC多域资源协同规划模型。模型以系统综合效益最大化为目标,同时考虑设备运行、服务质量等多域约束,通过对GDC设备容量、需求响应激励价格以及各预想场景下系统运行策略进行协同优化,以充分发掘数据负载灵活性潜力,实现系统经济性和碳中和效益的综合趋优。算例仿真结果验证了该文所提模型和方法的有效性。展开更多
文摘<span style="font-family:Verdana;">Develop</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">ment</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> of renewable energy (RE) and mitigation of carbon dioxide, as the two largest climate action initiatives are the most challenging factors for new generation green data center (GDC). Reduction of conventional electricity consumption as well as cost of electricity (COE) with preferred quality</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">of service (QoS) has been recognized as the interesting research topic in Information and Communication Technology (ICT) sector. Moreover, it becomes challenging to design a large-scale sustainable GDC with standalone RE supply. This paper gives spotlight on hybrid energy supply solution for the GDC to reduce grid electricity usage and minimum net system cost. The proposed framework includes RE source such as solar photovoltaic, wind turbine and non-renewable energy sources as Disel Generator (DG) and Battery. A hybrid optimization model is designed using HOMER software for cost assessment and energy evaluation to validate the effectiveness of the suggested scheme focusing on eco-friendly implication.</span></span></span>
文摘Energy consumption in data centers has grown out of proportion in regard to the state of energy that’s available in the universe. Technology has improved services and its application. The need for eco-friendly energy and increase in data centers performance brought about Green Computing into the energy consumption of data centers. Information technology has grown and eaten deep into the society that almost all the sectors if not all are dependent on information technology to move on. The consumption of power has increased greatly. In this research paper the techniques for optimizing energy in data centers for Green Computing would be discussed. This study intends to expose the limitations of existing security solutions for securing data centers by taking into consideration of limitations of existing security frameworks that cannot enhance the security of data centers.
文摘研究目的:数据中心服务器入风口温度升高将导致出风口温度随之升高,同时某些正在运作的服务器在高温环境下排放气体,可能会导致热点或硬件损坏。高出风口和热点造成制冷机制的负担。因此服务器可以被用于入风口温度灵敏度分析,且导致热点的位于高入风口区域的服务器可以被重新定位。创新要点:预测出风口温度作为入风口温度的参考。根据预测的出风口温度重新定位服务器,从而降低最大出风口温度并节省用于制冷的能量消耗。研究方法:根据能量守恒原则,提出服务器再定位算法(算法1),用于测试一组异构服务器。讨论不同测试组别下异构服务器再定位前后出入风口温度的时间响应以及CPU使用率(图2-28)。重要结论:所提热感知再定位方法应用于数据服务中心服务器可实现节能2.1 k W·h。再定位之后的服务器出风口温度同构化程度更高。对于每对再定位服务器,可以减少77%热点产生可能性。
文摘Energy generation and consumption are the main aspects of social life due to the fact that modern people’s necessity for energy is a crucial ingredient for existence. Therefore, energy efficiency is regarded as the best economical approach to provide safer and affordable energy for both utilities and consumers, through the enhancement of energy security and reduction of energy emissions. One of the problems of cloud computing service providers is the high rise in the cost of energy, efficiency together with carbon emission with regards to the running of their internet data centres (IDCs). In order to mitigate these issues, smart micro-grid was found to be suitable in increasing the energy efficiency, sustainability together with the reliability of electrical services for the IDCs. Therefore, this paper presents idea on how smart micro-grids can bring down the disturbing cost of energy, carbon emission by the IDCs with some level of energy efficiency all in an effort to attain green cloud computing services from the service providers. In specific term, we aim at achieving green information and communication technology (ICT) in the field of cloud computing in relations to energy efficiency, cost-effectiveness and carbon emission reduction from cloud data center’s perspective.
文摘The increase in computing capacity caused a rapid and sudden increase in the Operational Expenses (OPEX) of data centers. OPEX reduction is a big concern and a key target in modern data centers. In this study, the scalability of the Dynamic Voltage and Frequency Scaling (DVFS) power management technique is studied under multiple different workloads. The environment of this study is a 3-Tier data center. We conducted multiple experiments to find the impact of using DVFS on energy reduction under two scheduling techniques, namely: Round Robin and Green. We observed that the amount of energy reduction varies according to data center load. When the data center load increases, the energy reduction decreases. Experiments using Green scheduler showed around 83% decrease in power consumption when DVFS is enabled and DC is lightly loaded. In case the DC is fully loaded, in which case the servers’ CPUs are constantly busy with no idle time, the effect of DVFS decreases and stabilizes to less than 10%. Experiments using Round Robin scheduler showed less energy saving by DVFS, specifically, around 25% in light DC load and less than 5% in heavy DC load. In order to find the effect of task weight on energy consumption, a set of experiments were conducted through applying thin and fat tasks. A thin task has much less instructions compared to fat tasks. We observed, through the simulation, that the difference in power reduction between both types of tasks when using DVFS is less than 1%.
文摘数字经济下,发展以“高能源效率、低环境影响”为主要特征的绿色数据中心(green data center,GDC)是应对碳中和挑战和促进社会可持续发展的重要举措。如何科学配置供需侧资源,在满足服务质量约束的前提下,充分利用数据用户的互动响应潜力促进系统提质增效,是未来公有型GDC规划面临的难点。为此,该文基于信息-物理-社会耦合视角,在深入分析不同类型数据负载运行特性的基础上,引入后悔度匹配方法模拟数据用户参与GDC需求响应(GDC demand response,GDC-DR)意愿的中长期动态演化。基于动态预想场景,综合考虑数据用户参与GDC-DR意愿等内生不确定性和可再生能源发电出力、数据负载需求等外生不确定性的影响,提出一种GDC多域资源协同规划模型。模型以系统综合效益最大化为目标,同时考虑设备运行、服务质量等多域约束,通过对GDC设备容量、需求响应激励价格以及各预想场景下系统运行策略进行协同优化,以充分发掘数据负载灵活性潜力,实现系统经济性和碳中和效益的综合趋优。算例仿真结果验证了该文所提模型和方法的有效性。