StarTech.com C3000 Manuel d'utilisateur télécharger pdf (Page 14)

Figure 8. Diagram of the HP BladeSystem c3000 signal midplane

By taking advantage of the similar four-wire differential transmit and receive mechanism, the NonStop

signal midplane can support either network-semantic protocols (such as Ethernet, Fibre Channel, and

InfiniBand) or memory-semantic protocols (PCIe), using the same signal traces.

Figure 9 illustrates

how the physical lanes can be logically overlaid onto sets of four traces. Interfaces such as Gigabit

Ethernet (1000-base-KX) or Fibre Channel need only a 1x lane, or a single set of four traces. Higher

bandwidth interfaces, such as InfiniBand DDR, use up to four lanes.

Network-semantic interconnect protocols use network addresses in the packet headers to exchange data

between two nodes such as MAC addresses and IP addresses for Ethernet, world-wide port name for FC, or

GUID for InfiniBand. Memory-semantic interconnect protocols use memory addresses in the packet headers to

deposit or retrieve data where these addresses can be memory-mapped registers of a chip or system memory

location.

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StarTech.com C3000 Manuel d'utilisateur Page 14