Designing and Embedding Reliable Virtual Infrastructures
Designing and Embedding Reliable Virtual Infrastructures
复制标题
DOI：
10.1145/1851399.1851406
复制
发表时间：
2011-04-01
影响因子：
2.8
通讯作者：
Kozat, Ulas C.
中科院分区：
文献类型：
--
作者：
Yeow, Wai-Leong;Westphal, Cedric;Kozat, Ulas C.
在共享物理资源的虚拟化基础架构中，单个物理服务器故障将终止多个虚拟服务器，并使包含这些虚拟服务器的虚拟基础架构瘫痪。在最坏的情况下，更多的故障可能会由于剩余服务器的过载而级联。为了保证一定程度的可靠性，每个虚拟基础架构在实例化时都应该使用具有足够容量的备份虚拟节点和链路进行扩充。这确保了当发生物理故障时，有足够的计算资源可用，并且虚拟网络拓扑得到保留。然而，这样做可能会大大降低物理基础设施的利用率。如果备份资源在多个虚拟基础架构之间进行池化和共享，并智能地嵌入到物理基础架构中，则可以避免这种情况。这些技术可以减少虚拟备份的物理占用空间，同时保证可靠性。
In a virtualized infrastructure where physical resources are shared, a single physical server failure will terminate several virtual servers and crippling the virtual infrastructures which contained those virtual servers. In the worst case, more failures may cascade from overloading the remaining servers. To guarantee some level of reliability, each virtual infrastructure,atinstantiation, should be augmented with backup virtual nodes and links that have sufficient capacities. This ensures that, when physical failures occur, sufficient computing resources are available and the virtual network topology is preserved. However, in doing so, the utilization of the physical infrastructure may be greatly reduced. This can be circumvented if backup resources are pooled and shared across multiple virtual infrastructures, and intelligently embedded in the physical infrastructure. These techniques can reduce the physical foot print of virtual backups while guaranteeing reliability.