InfiniBand and TCP in the Data Center

The InfiniBand Architecture is designed to allow streamlined operation of enterprise and internet data centers by creating a fabric that allows low latency, high bandwidth clustering, communication and storage traffic. The TCP protocol stack is ubiquitous as the Internet and is vital to the continued success of LANs, MANs, WANs and the Internet worldwide. While ideal for WAN and LAN applications, TCP imposes serious operating penalties when used within a controlled environment such as today's Internet and enterprise data centers. This paper explores TCP limitations and discusses how they can be seamlessly overcome by exploiting the low latency hardware transport of InfiniBand to facilitate creation of N-Tier data centers.

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