Dual-port 40 Gbps or 100 Gbps Ethernet adapter

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The dual-port 40 Gbps or 100 Gbps Ethernet adapter provides two Ethernet port connections capable of running at 40 Gbps or 100 Gbps.

Figure 1. Dual-port 40 Gbps or 100 Gbps Ethernet adapter
Dual-port 100 Gbps Ethernet adapter
The Ethernet ports can be used for:
  • Host-attached connections using iSCSI or NVMe/TCP
  • IP Replication links
  • Replication using TCP (long distance) or RDMA (short distance)
  • Communication between systems.

Connections can be made via an Ethernet switch, or as a direct connection to a host or other FlashSystem controller.

Ethernet ports are numbered from 1 to 2, starting from the left (horizontal installation), or the top (vertical installation). Figure 2 shows ports and their indicators.
Figure 2. Front view of dual-port 40 Gbps or 100 Gbps Ethernet adapter
Dual-port 40 or 100 Gbps Ethernet adapter - front view
  •  1  Ethernet port (2-port card)
  •  2  Status LED for the first port
  •  3  Status LED for the second port
Each port has an QSFP28 receptacle and several physical connection types are supported.
Table 1. Connection types
Connection type Supply method IBM Feature Code or example vendor part numbers for customer-supplied parts
Optical Shortwave QSFP28 Module – 100 Gb MPO (SR4) IBM Orderable Feature ACJ9
Optical Shortwave QSFP28 Module – 40 Gb MPO (SR4) IBM Orderable Feature ACJB
Optical Shortwave QSFP28 Module – 100 Gb LC (SRBD) Customer supplied  
100 Gb DAC passive copper cable – up to 2M Customer supplied  
100 Gb AOC active optical cable Customer supplied  
Other 40 Gb supported connections Customer supplied  

Each port has indicators. For more information, see Dual-port 40 Gbps or 100 Gbps Ethernet host interface adapter ports and indicators.