SAS 4.0 (22.5Gbps)对服务器平台的挑战

2017 IEEE 26th Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS) Pub Date : 2017-10-01 DOI:10.1109/EPEPS.2017.8329765

Vijender Kumar, G. Anand, Sanjay Kumar, Mallikarjun Vasa, D. Wallace, B. Mutnury

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引用次数: 0

摘要

当今各种各样的服务器应用程序需要各种各样的存储需求。SAS 4.0技术的出现代表了存储IO的进化进步，以满足当今存储环境不断增长的需求。SAS 4.0具有前所未有的性能水平和改进的信号和管理，可以支持更大的磁盘附加，因此为用户提供了一个可扩展和灵活得多的直接附加存储(DAS)接口。本文重点介绍了在设计22.5Gbps的SAS 4.0链路时所面临的信号完整性挑战。电缆倾斜、连接器、材料损耗和通孔存根在很大程度上影响通道。信号完整性分析以SAS 4.0速度进行，以量化上述寄生效应的影响。

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SAS 4.0 (22.5Gbps) challenges for server platforms

Today's varied server applications necessitate a variety of storage requirements. The advent of SAS 4.0 technology represents an evolutionary advancement in storage IO to meet the growing demands of today's storage environments. With unprecedented performance levels and improved signaling and management for supporting larger disk attach, SAS 4.0 offers users a much more scalable and flexible direct attach storage (DAS) interface. This paper highlights the signal integrity challenges faced when designing SAS 4.0 links at 22.5Gbps. Cable skew, connectors, material loss and via stubs affect the channel to a great extent. Signal integrity analysis is performed at SAS 4.0 speed to quantify the impact of above listed parasitic effects.

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来源期刊

2017 IEEE 26th Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS)

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