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Recent years witness the successful application of Cloud computing. Virtualization plays a key role in cloud computing and greatly facilitates application deployment and migration. Tenants' applications are hosted by virtual machines. The security and safety of user applications receive much attention from academia and industry. However, fault tolerance and availability issues of cloud applications...
Cloud computing, as an emerging computing paradigm, greatly facilitates resource sharing and enables providing computing power as services over the Internet. However, it also brings new challenges for security and access control, especially in IaaS clouds. The introduction of virtualization layer increases new security risks which should be restricted and confined by more stringent access control...
Virtual Machine Cluster (VMC) is now widely used to host network applications due to its well scalability and high availability compared to physical cluster. To provide fault tolerance, VMC snapshot is one well known technique, it saves the entire VMC state into stable storage and rollbacks the VM from the latest saved state upon failures. However, due to the large snapshot size as well as numerous...
The computer-based education is the most popular teaching method in universities. Maintaining an all-purpose experiment environment based on physical computers is hard because different courses need different environments. Meanwhile, hardware-related experiment is suffering from the restriction of equipment location. This paper presents a work in progress on the development of a cloud-based experiment...
Large-scale datacenters have been widely used to host cloud services, which are typically allocated to different virtual machines (VMs) through resource multiplexing across shared physical servers. Although recent studies have primarily focused on harnessing live migration of VMs to achieve load balancing and power saving among different servers, there has been little attention on the incurred performance...
Cloud computing brings a loose-coupled resources integration paradigm with virtualized, elastic and cost-efficient resource management capabilities. Virtualization-based logging and replay technologies give users the ability to record the executions of the whole virtual machines and recover them at any time in a peer to peer mode, and it has become an important approach to analyze the system vul-nerability,...
Recently, "rootkit" becomes a popular hacker malware on the Internet, which controls the hosts on the Internet by hiding itself, and raises a serious security threat. Existing host-based and hardware-based solutions have some disadvantages, such as hardware overhead and being discovered by root kits, where the development of virtualization technology provides a better solution to avoid those...
With the increasing prevalence of large scale cloud computing environment, researchers has draw more attention about how to provide software as a service through the internet. In this paper, a novel approach named vSaaS is proposed in iVIC platform, which is the virtual computing environment for HaaS and SaaS applications. The aim of this approach is to provide the software as a service from a cloud...
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