The Experts below are selected from a list of 13812 Experts worldwide ranked by ideXlab platform
Sushil Jajodia - One of the best experts on this subject based on the ideXlab platform.
-
Quantitative survivability evaluation of three virtual machine-based Server architectures
Journal of Network and Computer Applications, 2013Co-Authors: Yan Yang, Yulong Zhang, Alex Hai Wang, Wanyu Zang, Peng Liu, Sushil JajodiaAbstract:Virtual machine-based services have become very popular in data centers and cloud computing in recent years. Efficient redundancy technology of virtual machine provides good availability for services; thus, it has become possible to provide continuous services even if the system suffers intrusions. So far, many intrusion tolerant Server architectures have been developed based on virtual machine technology in academia and industry. Unfortunately, to the best of our knowledge, there is very little work done on evaluating the survivability of virtual machine-based Server architectures in the literature. In this paper, we focus on analyzing and evaluating the survivability of three virtual machine-based architectures, which are load balance Server architecture (LBSA), isolated Component Server architecture (ICSA), and Byzantine fault tolerant Server architecture (BFTSA). As a reference, a traditional Server cluster without virtual machines is also analyzed and compared. We model different architectures with Continuous Time Markov Chain (CTMC). We analyze the transient behaviors and steady states of different virtual machine-based architectures. Furthermore, the costs of the traditional Server cluster and the virtual machine-based architectures are compared in terms of processing costs, memory costs, communication costs, and fail-safe fault tolerance. The results show that BFTSA has better survivability than LBSA and ICSA, but with longer time to reach the steady states and higher communication costs.
Hu Hai - One of the best experts on this subject based on the ideXlab platform.
-
Research on Real-time Component Assembly Based on Mobile Agents in Mobile Wireless Environments
Computer Science, 2007Co-Authors: Hu HaiAbstract:Because of the limited capability of mobile devices and lower bandwidth of wireless network, real-time com- ponent assembly in mobile wireless environments suffers more challenges and it needs an efficient and reliable mecha- nism to support. This paper presents a flexible and configurable mechanism, which uses mobile agents as brokers of mobile unit (MU) to communicate with Component Server, thus to reduce the unnecessary wireless communication costs of mobile client. It can also facilitate MU recovery back when suffering a failure to increase the reliability of the whole assembly process. Compared with other mechanisms through performance analysis, our mechanism shows its ef- ficiency and reliability.
Yan Yang - One of the best experts on this subject based on the ideXlab platform.
-
Quantitative survivability evaluation of three virtual machine-based Server architectures
Journal of Network and Computer Applications, 2013Co-Authors: Yan Yang, Yulong Zhang, Alex Hai Wang, Wanyu Zang, Peng Liu, Sushil JajodiaAbstract:Virtual machine-based services have become very popular in data centers and cloud computing in recent years. Efficient redundancy technology of virtual machine provides good availability for services; thus, it has become possible to provide continuous services even if the system suffers intrusions. So far, many intrusion tolerant Server architectures have been developed based on virtual machine technology in academia and industry. Unfortunately, to the best of our knowledge, there is very little work done on evaluating the survivability of virtual machine-based Server architectures in the literature. In this paper, we focus on analyzing and evaluating the survivability of three virtual machine-based architectures, which are load balance Server architecture (LBSA), isolated Component Server architecture (ICSA), and Byzantine fault tolerant Server architecture (BFTSA). As a reference, a traditional Server cluster without virtual machines is also analyzed and compared. We model different architectures with Continuous Time Markov Chain (CTMC). We analyze the transient behaviors and steady states of different virtual machine-based architectures. Furthermore, the costs of the traditional Server cluster and the virtual machine-based architectures are compared in terms of processing costs, memory costs, communication costs, and fail-safe fault tolerance. The results show that BFTSA has better survivability than LBSA and ICSA, but with longer time to reach the steady states and higher communication costs.
Yulong Zhang - One of the best experts on this subject based on the ideXlab platform.
-
Quantitative survivability evaluation of three virtual machine-based Server architectures
Journal of Network and Computer Applications, 2013Co-Authors: Yan Yang, Yulong Zhang, Alex Hai Wang, Wanyu Zang, Peng Liu, Sushil JajodiaAbstract:Virtual machine-based services have become very popular in data centers and cloud computing in recent years. Efficient redundancy technology of virtual machine provides good availability for services; thus, it has become possible to provide continuous services even if the system suffers intrusions. So far, many intrusion tolerant Server architectures have been developed based on virtual machine technology in academia and industry. Unfortunately, to the best of our knowledge, there is very little work done on evaluating the survivability of virtual machine-based Server architectures in the literature. In this paper, we focus on analyzing and evaluating the survivability of three virtual machine-based architectures, which are load balance Server architecture (LBSA), isolated Component Server architecture (ICSA), and Byzantine fault tolerant Server architecture (BFTSA). As a reference, a traditional Server cluster without virtual machines is also analyzed and compared. We model different architectures with Continuous Time Markov Chain (CTMC). We analyze the transient behaviors and steady states of different virtual machine-based architectures. Furthermore, the costs of the traditional Server cluster and the virtual machine-based architectures are compared in terms of processing costs, memory costs, communication costs, and fail-safe fault tolerance. The results show that BFTSA has better survivability than LBSA and ICSA, but with longer time to reach the steady states and higher communication costs.
Alex Hai Wang - One of the best experts on this subject based on the ideXlab platform.
-
Quantitative survivability evaluation of three virtual machine-based Server architectures
Journal of Network and Computer Applications, 2013Co-Authors: Yan Yang, Yulong Zhang, Alex Hai Wang, Wanyu Zang, Peng Liu, Sushil JajodiaAbstract:Virtual machine-based services have become very popular in data centers and cloud computing in recent years. Efficient redundancy technology of virtual machine provides good availability for services; thus, it has become possible to provide continuous services even if the system suffers intrusions. So far, many intrusion tolerant Server architectures have been developed based on virtual machine technology in academia and industry. Unfortunately, to the best of our knowledge, there is very little work done on evaluating the survivability of virtual machine-based Server architectures in the literature. In this paper, we focus on analyzing and evaluating the survivability of three virtual machine-based architectures, which are load balance Server architecture (LBSA), isolated Component Server architecture (ICSA), and Byzantine fault tolerant Server architecture (BFTSA). As a reference, a traditional Server cluster without virtual machines is also analyzed and compared. We model different architectures with Continuous Time Markov Chain (CTMC). We analyze the transient behaviors and steady states of different virtual machine-based architectures. Furthermore, the costs of the traditional Server cluster and the virtual machine-based architectures are compared in terms of processing costs, memory costs, communication costs, and fail-safe fault tolerance. The results show that BFTSA has better survivability than LBSA and ICSA, but with longer time to reach the steady states and higher communication costs.