A modular datacenter network (MDCN) is the key component in building mega datacenters. Huang Feng,
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Official Shop Online Air Jordan 11 Retro Concord 2011, and achieves graceful performance degradation when failures occur and increase. Their work, entitled "SCautz: a high performance and fault tolerant datacenter network for modular datacenters", has been published in Science China Information Sciences, 2012, Vol. 55(7).
To construct mega datacenters, the MDC first packages thousands of servers, which have been set up and wired, into one shipping container,
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Traditional datacenter networks (DCN) interconnect large numbers of servers directly, making these difficult to realize and maintain. An MDCN consists of intra and inter container networks, which largely simplify the design and implementation. Typically, a standard 20 or 40 foot shipping container is equipped with 1200 2500 servers, with the number of servers in a container fixed during its lifetime. A container’s moderate scale relaxes the restriction on the scalability of DCNs. So, intra container networks can adopt more complex topologies. Although the Kautz graph achieves near optimal tradeoff between node degree and diameter,
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Containerization lowers the total cost of ownership for cloud providers,
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For Sale Womens Shoes Air Jordan 13 Birmingham Barons, switch failures decrease BCube’s performance much more significantly, since its ABT deteriorates by more than 50% in the presence of 20% switch failures. The fact that network performance degrades faster than computation or storage capacity is the MDCN’s ultimate weakness, since this causes the container’s overall performance to decrease below the threshold criterion and end its lifespan prematurely.
Therefore, based on the "scale out" principle, SCautz presents a hybrid structure for dealing with server and switch faults. This comprises a base physical Kautz topology, which is built by interconnecting the servers’ NIC ports, and a small number of redundant commercial off the shelf (COTS) switches. In SCautz,
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First, SCautz can run in different modes with switches on or off. Its base topology provides high capacity for processing different types of traffic patterns,
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Third, the extra cost of the redundant design is very low. Theoretical analysis shows that a typical SCautz based container with 1280 servers only needs 160 COTS switches.
The design and implementation of SCautz was a collaborative effort involving many researchers. This research project was partially supported by the National Basic Research Program of China (Grant No. 2011CB302600) and National Natural Science Foundation of China (Grant No. 60903205),
Shop Cheap White Metallic 5s Sale Online, amongst others. It is an important breakthrough in modular datacenter network architectures. The researchers suggest that their work needs to be implemented and examined in a larger production datacenter. SCautz: a high performance and fault tolerant datacenter network for modular datacenters. Sci China Inf Sci, 2012, 55(7): 1.
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