Dell PowerEdge M1000e Technical Manual

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Dell PowerEdge M1000e Technical Manual Manual pdf 29 page image

29 PowerEdge M1000e Technical GuideFigure 14. Ethernet growth pathGbE fabrics use single lanes per link over 1000BASE-KX. Initially 10GbE will be supported through10GBASE-KX4, which uses four lanes per link, as does InifiniBand. As technology matures andenables high level integration, 10GBASE-KR will replace 10GBASE-KX4 as the 10GbE backplanetransport of choice, enabling 10 Gbps over single lanes within the system midplane. In the future,multiple lanes of 10GBASE-R per mezzanine will allow expanded Ethernet bandwidth up to 80 Gbpsper fabric mezzanine.Assuming a full population of GE and 10GbE lanes in Fabrics A, B and C, the M1000e can delivertheoretical total bandwidth of 8.4 Terabits per second.The M1000e is designed for full support of all near-, medium-, and long-term I/O infrastructureneeds. While the M1000e system’s bandwidth capabilities lead the industry, the M1000e is alsointelligently designed for maximum cost, flexibility, and performance benefit.While Fabric A is dedicated to the server module LOMs, requiring Ethernet switch or pass-throughmodules for I/O slots A1 and A2, Fabrics B and C can be populated with Ethernet, Fibre Channel, orInfiniBand solutions.I/O modules are used as pairs, with two modules servicing each server module fabric providing afully redundant solution. I/O modules may be pass-throughs or switches. Pass-through modulesprovide direct 1:1 connectivity from each LOM/mezzanine card port on each server module to theexternal network. Switches provide an efficient way to consolidate links from the LOM or mezzaninecards on the server modules to uplinks into the network.