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InfiniBand FDR Switch Platform Hardware User Manual
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1.2 Features List
• 216 FDR (56Gb/s) InfiniBand ports in a 9U switch
• 24.2 Tb/s aggregate data switching capacity with ultra low latency
• IBTA 1.3 and 1.2.1 compliant
• SDR/DDR/QDR/FDR10/FDR link speed
• N+N power supply
• Congestion control
1
• Adaptive routing
1
• Port mirroring
1
• Chassis High Availability
• sMB High Availability
1.3 InfiniBand FDR and FDR10 Overview
The Mellanox SX6512 switch system supports FDR, standard InfiniBand data rate,
where each lane of a 4X port runs a bit rate of 14.0625Gb/s with a 64b/66b encoding,
resulting in an effective bandwidth of 54.54Gb/s. The FDR physical layer is an IBTA
specified physical layer using different block types, deskew mechanism and framing
rules.
The SX6512 switch also supports FDR10, a non-standard InfiniBand data rate, where
each lane of a 4X port runs a bit rate of 10.3125Gb/s with a 64b/66b encoding, resulting
in an effective bandwidth of 40Gb/s.
FDR10 supports 20% more bandwidth over regular QDR using the same QSFP cables/
connectors.
Both FDR and FDR10 support Forward Error Correction (FEC), as described in IEEE
Std 802.3ap-2007 (Amendment to IEEE Std 802.3-2005) chapter 74.
1.4 Power Supply Redundancy
The SX6512 platform comes standard with four power supplies and has two order
options:
• SX6512-4R - N+1 redundancy
• SX6512-NR - N+N redundancy
1. Features for a future release.
FDR and FDR10 are only guaranteed to work with approved Mellanox cables.
FDR10 is only guaranteed to work with approved Mellanox ConnectX-3 adapters.