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Definition: InfiniBand

A high-speed interface used to connect storage networks and computer clusters, introduced in 1999. Using switched, point-to-point channels similar to mainframes and also like PCI Express (PCIe), InfiniBand is designed for fabric architectures that interconnect devices in local networks.

A Technology Merger
Supporting both copper wire and optical fibers and originally known as "System I/O," InfiniBand is a combination of Intel's NGIO (Next Generation I/O) and Future I/O from IBM, HP and Compaq. For more information, visit the InfiniBand Trade Association at www.infinibandta.org. See RDMA, PCI Express, NGIO and Future I/O.

 DIRECTION (Gigabits per Second)
   Data transfer rate is
   80% of signaling speed.

 Type           Number of
 (DR =          Bonded Channels
  data rate)     1x   4x   8x   12x

 Single (SDR)   2.5   10   20   30

 Double (DDR)     5   20   40   60

 Quad (QDR)      10   40   80  120

 14 (FDR)        14   56  112  168

 Enhanced (EDR)  26  104  208  312