The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Network Function Virtualization (NFV) is a promising solution for telecom operators and service providers to improve business agility, by enabling a fast deployment of new services, and by making it possible for them to cope with the increasing traffic volume and service demand. NFV enables virtualization of network functions that can be deployed as virtual machines on general purpose server hardware...
The emergence of 5G wireless and IoT (Internet of Things) technologies, as well as the continuous evolution of cloud computing is driving the need for easy and on-demand creation of end-to-end network services. We have developed an integrated system called the end-to-end network service orchestrator, which realizes seamless service orchestration across multiple on-premises and cloud infrastructures...
Virtual data centers (VDCs) are among competitive advantages offered to businesses by cloud computing. Through VDCs, organizations can use a pool of on-demand virtual infrastructures in the form of a data center without paying the up-front costs of an actual data center. With the advent of software-defined networks (SDNs), it is now possible to provide the VDC's tenants with overlay SDNs to cover...
Container-based virtualization offers several advantages such as high performance, resource efficiency, and agile environment, which can make IoT device management easy. Though previous studies introduce container-based virtualization to IoT devices, they do not address different network modes of containers and the performance issues. Because the network performance is an important factor in IoT,...
The blockchain technology is gaining momentum because of its possible application to other systems than the cryptocurrency one. Indeed, blockchain, as a de-centralized system based on a distributed digital ledger, can be utilized to securely manage any kind of assets, constructing a system that is independent of any authorization entity. In this paper, we briefly present blockchain and our work in...
Virtual Content Delivery Network (vCDN) orchestration is necessary to optimize the use of resources and improve the performance of the overall SDN/NFV-based CDN function in terms of network operator cost reduction and high streaming quality. It requires intelligent and enticed joint SDN/NFV orchestration algorithm due to the evident huge amount of traffic to be delivered to end customers of the network...
In recent years, many database systems have been deployed in virtualized cloud platforms to take advantage of the general benefits of virtualization and cloud computing. However, deploying database systems in such environments poses some challenges that should be addressed. The performance of database systems can degrade due to the various overheads introduced by the virtualization including CPU,...
Nowadays, cloud computing has emerged as the most popular computing platform due to its ability to reduce the operating costs. A sizable chunk of the operating costs is composed of power consumption of the cloud data center alone. It has been observed that improperly sized virtual machines result in comparatively higher power consumption. Although efforts have been made to address the issue of high...
This paper describes a new architecture for Internet of Things (IoT) devices for extending their functions, by virtualizing their functions and setting them in a fog computing environment. This architecture is based on the cooperation of IoT devices and their extensions deployed on other servers in the fog computing environment via a virtualization method. An implementation example indicates the feasibility...
The Moodle portal of our faculty is running in a virtualized environment together with other about 50 application servers and 60 virtualized desktops. Increasing traffic on the site (reaching over 400 000 views/posts monthly) forced us to assess its performance impact on the virtualization environment. The performance analysis identified processor cycles and disk operations as the bottlenecks of the...
FPGA-based accelerators are becoming first class citizens in data centers. Adding FPGAs in data centers can lead to higher compute densities with improved energy efficiency for latency critical workloads, such as financial applications. However FPGA deployment in datacenters brings difficulties both to application developers, and cloud providers. Application writers need to deal with the interfacing...
Recent developments induced by the Internet of Things (IoT) force a paradigm shift to deploy on demand services to a broad range of different computing architectures. Mainly single board computers (SBCs) gained a lot of attraction in recent years, shifting highly available processing power to service consumers and IoT devices. Simultaneously, container virtualization achieved a breakthrough by the...
The universal diagram of creation of the virtual practical works for a row of disciplines of ICT is offered. Use the VirtualBox virtualization system for different variants of the practical works organization is considered. The diagram of the organization of a workshop on installation of the selected UNIXserver is provided. The conclusion about need of a combination of operation for a display class...
The consolidation of services is a widely accepted technique for IaaS Cloud providers to reducing energy consumption and improving the utilization of their resources. This technique is based on distributing all services in the minimum amount of servers. This way, the overall energy consumption of the datacenter is reduced, as less servers are needed to be active. Traditionally, research has focused...
To reduce energy consumption and carbon emission, many data centers have deployed (or anticipate to build) their own renewable-energy power plants. However, the renewable energy (such as wind, tide, and solar energy) has the serious issues of intermittency and variability that prevent the green energy from being utilized effectively in practice. To cope with the issues, new power-supply management...
Cloud users may decide to live migrate their virtual machines from a public cloud provider to another due to a lower cost or ceasing operations. Currently, it is not possible to install a second virtualization platform on public cloud infrastructure (IaaS) because nested virtualization and hardwareassisted virtualization are disabled by default. As a result, cloud users' VMs are tightly coupled to...
Virtual Desktop Infrastructure refers to a process of running user's desktop in a virtual machine that lives on a server in the datacenter. A protocol is important in the communication process of virtual desktop infrastructure. For small deployment scenario, we have two options: using built-in RDP protocol that comes from Windows desktop; or adding more investment for PCoIP protocol in VMware environment...
The computational world has become very large and complex. Cloud is an emerging technology in the world of Information Technology. Cloud computing offers IT capabilities as services. Cloud based services are on demand, scalable, device independent and reliable. Cloud computing is built on the virtualization concept. Virtualization separates hardware from software and has benefits of server consolidation...
This work focuses on how to provide the best virtual desktop technology, virtualization performance and hardware in the computer classroom. There are using the three popular virtualization technologies in the same environment to establish the same conditions, pure performance comparison: VMware Horizon, Citrix XenDesktop, and Microsoft VDI. Test software used to the current popular software, system...
A novel architecture dealing with the coupling between cloud orchestration and network control is here proposed. TRIIIAD — TRIple-Layered Intelligent and Integrated Architecture for Data Centers consists of three horizontal layers and a vertical control, management and orchestration plane. The top layer offers the IaaS (Infrastructure as a Service). The middle layer provides a lightweight routing/forwarding...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.