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Virtualization, The next step for online services  [PDF]
Cristian Nicolae M?rgescu,Haller Piroska
Scientific Bulletin of the ''Petru Maior" University of T?rgu Mure? , 2013,
Abstract: Virtualization allows sharing and allocating the hardware resources to more virtual machines thus increasing their usage rate. There are multiple solutions available today such as VMware vSphere, Microsoft Hyper-V, Xen Server and Red Hat KVM each with its own advantages and disadvantages. Choosing the right virtualization solution largely depends on the used applications and their resources requirements. The comparative analysis of the available virtualization solutions shows that it is essential to establish performance criteria’s and minimum and maximum resources usage thresholds over a given period of time. The coexistence of different services in different virtual machines that use different amount of resources allows a more efficient use of the available hardware resources.
An Overview: Security in Virtualization Technology  [PDF]
V. Anitha,N. Keerthana
Journal of Artificial Intelligence , 2013,
Abstract: In IT industries, securing the data plays a vital role. The aim of the study is to improve the security in virtualization technologies. Now-a-days IT industries prefer virtualization methods because it provides high security with low cost. The organizations enhance their security by providing different method through virtualization technology. This study explains the security in major virtualization technologies such as KVM, Xen, VMware and Microsoft.
Survey of Server Virtualization  [PDF]
Radhwan Y Ameen,Asmaa Y. Hamo
Computer Science , 2013,
Abstract: Virtualization is a term that refers to the abstraction of computer resources. The purpose of virtual computing environment is to improve resource utilization by providing a unified integrated operating platform for users and applications based on aggregation of heterogeneous and autonomous resources. More recently, virtualization at all levels (system, storage, and network) became important again as a way to improve system security, reliability and availability, reduce costs, and provide greater flexibility. Virtualization has rapidly become a go-to technology for increasing efficiency in the data center. With virtualization technologies providing tremendous flexibility, even disparate architectures may be deployed on a single machine without interference This paper explains the basics of server virtualization and addresses pros and cons of virtualization
HEP@Home - A distributed computing system based on BOINC  [PDF]
Antonio Amorim,Jaime Villate,Pedro Andrade
Computer Science , 2004,
Abstract: Project SETI@HOME has proven to be one of the biggest successes of distributed computing during the last years. With a quite simple approach SETI manages to process large volumes of data using a vast amount of distributed computer power. To extend the generic usage of this kind of distributed computing tools, BOINC is being developed. In this paper we propose HEP@HOME, a BOINC version tailored to the specific requirements of the High Energy Physics (HEP) community. The HEP@HOME will be able to process large amounts of data using virtually unlimited computing power, as BOINC does, and it should be able to work according to HEP specifications. In HEP the amounts of data to be analyzed or reconstructed are of central importance. Therefore, one of the design principles of this tool is to avoid data transfer. This will allow scientists to run their analysis applications and taking advantage of a large number of CPUs. This tool also satisfies other important requirements in HEP, namely, security, fault-tolerance and monitoring.
VIRTUALIZATION TECHNOLOGY FOR SMB
Adriana BARNOSCHI
Lex et Scientia , 2009,
Abstract: Data is growing at an alarming rate. Storage administrators are struggling to handle a spiraling volume of documents, images, audio and video files and large emails. Virtualization is a general term that could be applied to: storage systems, databases and networks. In this article, I present an overview of server virtualization architecture. I also specify the goals and benefits of virtualization for a SMB. The article points out some issues about server virtualization: definition, implementing problems and security features. In case of major calamity, you need a disaster recovery plan. The article lists a series of differences and similar parts of DR planning and business continuity plan. I give some ideas that guide you to protect yourself against disaster, what to back up and how backups should work.
IMPLICATIONS OF STORAGE VIRTUALIZATION FOR SMB
Adriana BARNOSCHI
Lex et Scientia , 2009,
Abstract: In today’s datacenters, the unexpected increase of virtual and physical servers has led to exponential increases in data transfer volumes, bandwidth bottlenecks, and connectivity costs. This growth causes major problems for IT managers as they struggle to see more cost effective, scalable ways to manage the increasing complexity of servers and their associated LAN and SAN environments. Virtualization is a general term that could be applied to: storage systems, databases and networks. In this article, I present an overview of server virtualization architecture. I also specify the goals and benefits of virtualization for a SMB. The article points out some issues about server virtualization: definition, implementing problems and security features. In case of major calamity, you need a disaster recovery plan. The article lists a series of differences and similar parts of DR planning and business continuity plan.
Anception: Application Virtualization For Android  [PDF]
Earlence Fernandes,Alexander Crowell,Ajit Aluri,Atul Prakash
Computer Science , 2014,
Abstract: The problem of malware has become significant on Android devices. Library operating systems and application virtualization are both possible solutions for confining malware. Unfortunately, such solutions do not exist for Android. Designing mechanisms for application virtualization is a significant chal- lenge for several reasons: (1) graphics performance is important due to popularity of games and (2) applications with the same UID can share state. This paper presents Anception, the first flexible application virtualization framework for Android. It is imple- mented as a modification to the Android kernel and supports application virtualization that addresses the above requirements. Anception is able to confine many types of malware while supporting unmodified Android applications. Our Anception- based system exhibits up to 3.9% overhead on various 2D/3D benchmarks, and 1.8% overhead on the SunSpider benchmark.
Virtualization as the Evolution of Operating Systems  [PDF]
Tudor Zaharia
Scientific Bulletin of the ''Petru Maior" University of T?rgu Mure? , 2010,
Abstract: Although virtualization has been around for more than 50 years, the subject is hotter than ever. Initiated to simulate multiple machines using hardware and software techniques, virtualization today brings server consolidation, security and isolation for multiple operating systems running on the same hardware. This article’s main objective is to show that virtual machines are just another step in the evolution of operating systems. I will argue that in fact a virtual machine monitor is a resource manager just like an operating system is. Important points like CPU and memory management are going to be addressed. Although not exhaustive, this paper will discuss the most important attributes of virtual machine monitors as operating systems and my view on how the field should evolve in this new light.
High availability using virtualization  [PDF]
Federico Calzolari
Computer Science , 2009,
Abstract: High availability has always been one of the main problems for a data center. Till now high availability was achieved by host per host redundancy, a highly expensive method in terms of hardware and human costs. A new approach to the problem can be offered by virtualization. Using virtualization, it is possible to achieve a redundancy system for all the services running on a data center. This new approach to high availability allows to share the running virtual machines over the servers up and running, by exploiting the features of the virtualization layer: start, stop and move virtual machines between physical hosts. The system (3RC) is based on a finite state machine with hysteresis, providing the possibility to restart each virtual machine over any physical host, or reinstall it from scratch. A complete infrastructure has been developed to install operating system and middleware in a few minutes. To virtualize the main servers of a data center, a new procedure has been developed to migrate physical to virtual hosts. The whole Grid data center SNS-PISA is running at the moment in virtual environment under the high availability system. As extension of the 3RC architecture, several storage solutions have been tested to store and centralize all the virtual disks, from NAS to SAN, to grant data safety and access from everywhere. Exploiting virtualization and ability to automatically reinstall a host, we provide a sort of host on-demand, where the action on a virtual machine is performed only when a disaster occurs.
An Overview of Disaster Recovery in Virtualization Technology  [PDF]
R. Sindoori,V. Preetha Pallavi,P. Abinaya
Journal of Artificial Intelligence , 2013,
Abstract: In IT Business organisations, accessing and maintaining of data plays a vital role. Data disaster will occur due to human prone and natural hazards, so disaster recovery is important for IT business. Virtualization is one of the best technologies for disaster recovery because of high resource utilization, high availability, ease of power management, recovery management and dynamic infrastructure. This study describes some disaster recovery mechanisms in major virtualization technologies such as VMware, Citrix, Microsoft, Oracle VM, and Parallel workstation.
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