SCautz:a high performance and fault-tolerant datacenter network for modular datacenters  

作　　者：HUANG Feng LU XiCheng LI DongSheng ZHANG YiMing 

机构地区：[1]National Lab for Parallel and Distributed Processing,School of Computer,National University of Defense Teehnology,Changsha 410073,China

出　　处：《Science China(Information Sciences)》2012年第7期1493-1508,共16页中国科学（信息科学）（英文版）

基　　金：supported in part by National Basic Research Program of China (Grant No. 2011CB302600);National Natural Science Foundation of China (Grant No. 60903205);Foundation for the Author of National Excellent Doctoral Dissertations of China (Grant No. 200953);Research Fund for the Doctoral Program of Higher Education (Grant No. 20094307110008)

摘　　要：Modular datacenters （MDCs） use shipping containers, encapsulating thousands of servers, as large pluggable building blocks for mega datacenters. The MDC＇s ＂service-free＂ model poses stricter demand on fault-tolerance of the modular datacenter network （MDCN）. Based on the ＂scale-out＂ principle, in this paper we propose SCautz, a novel hybrid intra-container network for MDCs. SCautz comprises a base Kantz topology, created by interconnecting servers, and a small number of COTS （commercial off-the-shelf） switches. Moreover, each switch connects a specific number of servers forming ＂clusters＂, which, as logical nodes, form multiple higher-level logical Kautz structures. SCautz＇s hybrid structure has several advantages. First, it supports multiple running modes for the MDC, while its full structure increases network capacity twofold. Second, it retains the throughput for processing one-to-x traffic in the presence of failures. Finally, it achieves much more graceful network performance degradation than computation and storage capacity do. Results from theoretical analysis and simulations show that SCautz is more viable for intra-container networks.Modular datacenters （MDCs） use shipping containers, encapsulating thousands of servers, as large pluggable building blocks for mega datacenters. The MDC＇s ＂service-free＂ model poses stricter demand on fault-tolerance of the modular datacenter network （MDCN）. Based on the ＂scale-out＂ principle, in this paper we propose SCautz, a novel hybrid intra-container network for MDCs. SCautz comprises a base Kantz topology, created by interconnecting servers, and a small number of COTS （commercial off-the-shelf） switches. Moreover, each switch connects a specific number of servers forming ＂clusters＂, which, as logical nodes, form multiple higher-level logical Kautz structures. SCautz＇s hybrid structure has several advantages. First, it supports multiple running modes for the MDC, while its full structure increases network capacity twofold. Second, it retains the throughput for processing one-to-x traffic in the presence of failures. Finally, it achieves much more graceful network performance degradation than computation and storage capacity do. Results from theoretical analysis and simulations show that SCautz is more viable for intra-container networks.

关 键 词：modular datacenter network CONTAINER Kautz FAULT-TOLERANT 

分 类 号：TP393.4[自动化与计算机技术—计算机应用技术] TN929.5[自动化与计算机技术—计算机科学与技术]