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Cloud Computing
Published in Vikas Kumar Jha, Bishwajeet Pandey, Ciro Rodriguez Rodriguez, Network Evolution and Applications, 2023
Vikas Kumar Jha, Bishwajeet Pandey, Ciro Rodriguez Rodriguez
According to Accenture (2010), a data center is a facility used to house computer systems and associated components. This facility concentrates all or part of the resources necessary for processing information in an organization. They typically include redundant power supplies and data connections, backups, and cooling systems as safety devices. Access to these computing resources is via data connections or the Internet. In the case of cloud computing providers, these data centers also concentrate on the processing needs of customers.
Benefits and Risks of Cloud Computing
Published in Uzzal Sharma, Parmanand Astya, Anupam Baliyan, Salah-ddine Krit, Vishal Jain, Mohammad Zubair Khan, Advancing Computational Intelligence Techniques for Security Systems Design, 2023
Osheen Oberoi, Sahil Raj, Viput Ongsakul, Vishal Goyal
A data center is a storehouse where data is stored at a centralized location. It provides numerous vital services to organizations, such as data storage, data backup and recovery, and management. Some organizations rent their data centers to users. There exist a plethora of access security issues in the cloud data centers, so no organizations can provide full physical security of the data. Data leakage in the data centers is considered to be the prime security concern. While developing the data center, the developer ensures all security measures to protect the information are taken. An organization's data is not only at risk from malicious outsiders, but an insider can also harm the data by accessing or controlling the internal physical security [36]. Sensitive information can be leaked either by a malicious insider or a malicious system admin who can access it and breach the user's privacy [34]. A cold boot attack is another way intruders steal crucial data by directly accessing the computer hardware. In other words, the hacker has physical access to the user's computer and then carries out a cold reboot to restart the machine with a motive to retrieve the encryption keys from the Windows Operating System. Besides, hardware tampering is yet another security issue in which the attacker intentionally implies an intrusion mechanism to perform an unauthorized physical or electronic action against a device.
Security-Enhanced Cloud for Serverless Computing and Its Applications
Published in T. Ananth Kumar, T. S. Arun Samuel, R. Dinesh Jackson Samuel, M. Niranjanamurthy, Privacy and Security Challenges in Cloud Computing, 2022
L. Jerart Julus, Krishnan Ayyappan
Computing refers to the activity of building and benefiting from computing infrastructure. This includes the development of software, hardware, and the research of algorithms. In the last 10–15 years, a new model of computing, called “cloud computing,” has increased in usage and popularity [1]. Cloud is nothing but the collection of computing resources (such as powerful computers, servers, and so on) located in a particular place, which we call data centers. Unlike the personal computing environment, these data centers are owned by cloud service providers and not by the users themselves.
Critical temperature of free cooling using indirect opening cooling tower in data centres: a review
Published in International Journal of Ambient Energy, 2022
Jing Liu, Lin Su, Kaijun Dong, Xueliang Liu
A data centre is a specific space for high-performance computers, storage servers, communication racks, and other information technology (IT) devices (Hassan, Sajid, and Perwez 2015). Although the data centre can store and process vast volumes of data, it will consume immense energy. According to statistics, the total power consumption of global data centres has already accounted for 3% of the global power consumption (Nakamura, Matsuda, and Matsuoka 2016). The total power consumption of data centres in China has reached 120 billion kilowatts in 2017, surpassing the annual power generation of the Three Gorges, the largest hydroelectric power station (‘As of July 26, 2018, the Gu Da LARGE listed on its website’). Currently, the average power usage effectiveness (PUE) of data centres in developed countries is below 1.7; while, the average PUE of data centres in China is generally higher than 2.2 (Su et al. 2019). Therefore, lowering the average PUE has become the core issue of data centre energy conservation.
Experimental investigation of a novel micro-channel flat loop heat pipe (MC-FLHP) for data center cooling and heat recovery
Published in International Journal of Green Energy, 2022
Jinwei Xiang, Liang Luo, Xupeng Wang, Samson Shittu, Zhangyuan Wang, Xudong Zhao, Chuangbin Weng
In recent years, with the rapid development of data centers, the problem of high-energy consumption has become increasingly prominent (Koomey J 2011),(Jin and Bai 2019). According to the report released by Cushman & Wakefield in 2018 (Andrae 2017), the annual growth rate of data centers is predicted to reach 12–14% in the next 2–5 years, and will cause 1/5 of the global electricity consumption by 2025. Data centers are creating major waste energy through the increasing demand for cloud-based connectivity and performance (Cho, Lim, and Kim 2012),(Ebrahimi, Jones, and Fleischer 2014). To reduce the data center energy consumption, many researches based on the effective use of data center facilities are on-going (Shehabi et al. 2016), especially the data center cooling system. In the traditional data center, the most popular method for data center cooling is by vapor compression cooling system to produce cold air. Cold air is supplied from the underfloor (Ding et al. 2016), and flows through the IT equipment in the rack. Furthermore, hot air flows out of the rack and comes back to the cooling system. To maintain the appropriate operating temperature of the IT equipment, the cooling system has to operate all year-round, and the mechanical vapor compression cooling systems in the traditional data centers consume nearly 33% of the total electrical energy.
Adoption Intention of Cloud Computing at the Firm Level
Published in Journal of Computer Information Systems, 2019
Cloud computing is an innovative technology. It has greatly altered the IT industry and its commercial operating logics. It enables firms to reduce their operating costs by using on-site hardware, data storage, and network in the data center, instead of having to purchase additional hardware. It also enables firms to improve efficiency and create new business models and values [2, 6, 7, 8]. However, firms hesitate to use cloud computing because they are not the sole controllers; that is, the resources and information stored on the cloud server are hosted by cloud-computing providers. Therefore, numerous firms resist the acceptance of cloud computing [4, 6, 9]. However, only 27% companies are willing to adopt cloud computing [10]. The under achievement of cloud computing has prompted this study to investigate the factors that encourage firms to use private cloud computing and that prevent companies from accepting cloud computing from the perspective of perceived risk. Few research studied cloud computing. Because cloud computing is in its infant stage, investigating cloud-computing adoption is worthwhile.