Survey
Survey
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DOI：
10.1145/2940295
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发表时间：
2016-07
期刊：
影响因子：
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通讯作者：
P. Kokkinos;D. Kalogeras;A. Levin;Emmanouel Varvarigos
中科院分区：
文献类型：
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作者：
P. Kokkinos;D. Kalogeras;A. Levin;Emmanouel Varvarigos
我们从网络的角度研究虚拟机实时迁移（LM）和灾难恢复（DR），考虑到远程网络，例如数据中心之间的网络。这些网络通常受限于有限的可用带宽、增加的延迟和拥塞，或者在使用专用网络资源时使用成本高，而它们的确切特性无法控制。LM和DR面临着一些挑战，因为需要通过长距离网络传输大量数据，这些数据随着迁移或保护的资源数量的增加而增加。在此背景下，我们的工作展示了LM和DR目前的执行方式及其在远程网络环境中的操作，讨论了相关问题和瓶颈，并调查了其他工作。我们还介绍了当今网络的发展方式，以及可用于提高长距离LM和DR效率的新技术和协议（例如，软件定义网络或SDN和灵活的光网络）。远程环境下的流量重定向也是整个等式的重要组成部分，因为它直接影响到LM和dr的透明度，本文介绍了学术界和工业界的相关工作和解决方案。
We study the virtual machine live migration (LM) and disaster recovery (DR) from a networking perspective, considering long-distance networks, for example, between data centers. These networks are usually constrained by limited available bandwidth, increased latency and congestion, or high cost of use when dedicated network resources are used, while their exact characteristics cannot be controlled. LM and DR present several challenges due to the large amounts of data that need to be transferred over long-distance networks, which increase with the number of migrated or protected resources. In this context, our work presents the way LM and DR are currently being performed and their operation in long-distance networking environments, discussing related issues and bottlenecks and surveying other works. We also present the way networks are evolving today and the new technologies and protocols (e.g., software-defined networking, or SDN, and flexible optical networks) that can be used to boost the efficiency of LM and DR over long distances. Traffic redirection in a long-distance environment is also an important part of the whole equation, since it directly affects the transparency of LM and DR. Related works and solutions both from academia and the industry are presented.