The main services in cloud computing are SaaS (Software as a Service), PaaS (Platform as a Service) and IaaS (Infrastructure as a Service). Among these services, server virtualization falls into IaaS which is a service for lowering server maintenance costs. Generally, the primary aim of server virtualization has been to improve system performance by replacing multiple servers with a single serv...

This paper presents the concepts of network virtualization, focusing specifically on wireless virtualization of the LTE mobile communication system. A novel wireless virtualization framework is proposed and developed, which allows mobile network operators to share the wireless spectrum, as well as, the infrastructure (i.e., hardwares equipment). The framework targets the concepts of wireless vi...

The rapid development and release of emerging technologies have made their adoption challenging. Most often there are failing issues in organizational adoption of emerging technologies. It is yet unclear which component(s) of organization play the prominent role(s) in organizational readiness to adopt emerging technologies. Using a mixed method, this study conducted an online survey of 83 South...

Many public organizations have been adopting and operating various servers. These servers run on Windows, Unix, and Linux operating systems that generally use less than 10% of their capacity. For migrating a public organization to cloud computing, we must first virtualize the server environment. This article proposes a strategy for server virtualization that the National IT Industry Promotion A...

System-level virtualization is today enjoying a rebirth, after first gaining popularity in the 1970s as a technique to effectively share what were then considered large computing resources to subsequently fade from the spotlight as individual workstations gained in popularity with a “one machine – one user” approach. One reason for this resurgence is that the simple workstation has grown in cap...

Hardware errors are no longer the exceptions in modern cloud data centers. Although virtualization provides software failure isolation across different virtual machines (VM), the virtualization infrastructure including the hypervisor and privileged VMs remains vulnerable to hardware errors. Making matters worse is that such errors are unlikely bounded by virtualization boundary and may lead to ...

Network virtualization is one of the topics that recently have been receiving attention in the research community. It is becoming evidently clear that network virtualization will be a major player in the shaping of the Future Internet. Many research projects around the world are studying different aspects of network virtualization: some are focusing on resource virtualization like Node, Server ...

Leveraging redundant resources is a common means of addressing availability requirements, but it often implies redundant costs as well. At the same time, virtualization technologies are bursting into data centers with the promise of reducing costs through resource consolidation. Can virtualization and High Availability (HA) technologies be combined to optimize availability while mini...

Virtualization has become a popular way to make more efficient use of server resources within both private data centers and public cloud platforms. Hypervisors are widely used in cloud environments and their impact on application performance has been a topic of significant research and practical interest. While recent advances in CPU architectures and new virtualization techniques have reduced ...

In classical machine virtualization, a hypervisor runs multiple operating systems simultaneously, each on its own virtual machine. In nested virtualization, a hypervisor can run multiple other hypervisors with their associated virtual machines. As operating systems gain hypervisor functionality—Microsoft Windows 7 already runs Windows XP in a virtual machine—nested virtualization will become ne...