Quantitative survivability evaluation of three virtual machine-based server architectures
Quantitative survivability evaluation of three virtual machine-based server architectures
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DOI：
10.1016/j.jnca.2012.12.006
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发表时间：
2013-03
期刊：
影响因子：
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通讯作者：
Yan Yang;Yulong Zhang;A. Wang;Meng Yu;Wanyu Zang;Peng Liu;S. Jajodia
中科院分区：
文献类型：
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作者：
Yan Yang;Yulong Zhang;A. Wang;Meng Yu;Wanyu Zang;Peng Liu;S. Jajodia
近年来，基于虚拟机的服务在数据中心和云计算中变得非常流行。虚拟机的高效冗余技术为服务提供了良好的可用性，从而使得即使系统遭受入侵也能提供连续的服务成为可能。到目前为止，学术界和工业界已经开发了许多基于虚拟机技术的入侵容忍服务器体系结构。不幸的是，据我们所知，在文献中，很少有工作做评估基于虚拟机的服务器架构的生存性。在本文中，我们重点分析和评估的三个虚拟机为基础的体系结构，这是负载平衡服务器体系结构（LBSA），隔离组件服务器体系结构（ICSA），拜占庭容错服务器体系结构（BFTSA）的生存性。作为参考，传统的服务器集群没有虚拟机也进行了分析和比较。我们使用连续时间马尔可夫链（CTMC）对不同的体系结构进行建模。我们分析了不同的基于虚拟机的体系结构的瞬态行为和稳态。此外，传统的服务器集群和基于虚拟机的架构的成本进行了比较，在处理成本，内存成本，通信成本，和故障安全容错。结果表明，BFTSA比LBSA和ICSA具有更好的生存性，但达到稳定状态的时间更长，通信代价更高。
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.