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Cloud computing is revolutionizing how organizations treat computing resources. The privileged virtual machine is a key component in systems that use virtualization, but poses a dependability risk for several reasons. The activation of residual software faults that exist in every software project is a real threat and can impact the correct operation of the entire virtualized system. To study this...
Multi-cloud systems have been gaining popularity due to the several benefits of the multi-cloud infrastructure such as lower level of vendor lock-in and minimize the risk of widespread data loss or downtime. Thus, the multi-cloud infrastructure enhances the dependability of the cloud-based system. However, it also poses many challenges such as nonstandard and inherent complexity due to different technologies,...
One of primary and challenging difficulties in placing virtual machine (VM) onto physical machines in a cloud data center, is to balance the interests of both cloud service providers (CSPs) and cloud tenants, which are often expressed as minimizing the number of power-on servers and improving user experience respectively. However, the current research on VMP try to gathering the requested VMs on the...
Various literature studies demonstrated that the cloud computing paradigm can help to improve availability and performance of applications subject to the problem of software anomalies. Indeed, the cloud resource provisioning model enables users to rapidly access new processing resources, even distributed over different geographical regions, that can be promptly used in the case of, e.g., crashes or...
Cloud infrastructures provide elastic computing resources to client organizations, enabling them to build online applications while avoiding the fixed costs associated to a complete IT infrastructure. However, such organizations are unlikely to fully trust the cloud for the most critical applications. Among other threats, soft errors are expected to increase with the shrinking geometries of transistors,...
Cloud computing demand is increasing due to which it is important to provide correct services in the presence of faults also. The Resources in cloud computing can be dynamically scaled that too in a cost effective manner. Fault Tolerance is the process of finding faults and failures in a system. If a fault occurs or there is a hardware failure or software failure then also the system should work properly...
Failure prediction is a promising technique to improve dependability of computer systems, in particular when it is important to foresee incoming failures and take corrective actions to avoid downtime or data corruption. Failure prediction is especially adequate in long running systems where internal errors accumulate and eventually lead to failures. The problem is that such systems do evolve. The...
The Third International Workshop on Dependability of Clouds, Data Centers, and Virtual Machine Technology (DCDV 2013) features papers covering various aspects of dependability and security in Clouds and Data Centers. Four sessions covering Cloud and Data Center Networking, Dependability Evaluation, Mobile and Cloud Computing, and Virtualization and Cloud include eleven papers.
Cloud computing has become increasingly popular by obviating the need for users to own and maintain complex computing infrastructure. However, due to their inherent complexity and large scale, production cloud computing systems are prone to various runtime problems caused by hardware and software failures. Dependability assurance is crucial for building sustainable cloud computing services. Although...
Cloud computing has emerged as popular paradigm that enables the establishment of large scale, flexible computing infrastructures that can offer significant cost savings for both businesses and consumers by allowing compute resources to be scaled dynamically to deal with current or anticipated usage [1]. This concept has been further strengthened with the emergence of federated computing Clouds that...
There can be more system failures in the near future because of the combination of increased software complexity and a wide variety of usage patters. It is, however, difficult or sometimes almost impossible to find the root causes of the failures only from the limited and unreliable information provided by customers. Therefore, it is important to equip a feature that enables the complete tracing of...
This paper investigates different uses of system-level virtualization to improve dependability of software systems. Notable works are studied and presented in two categories, namely, the attributes of dependability and the means to attain those attributes. The works that have been done in improving different attributes of dependability including availability, reliability, safety, integrity and also...
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