Cable reference

The cable standard tables specify cable types and standards for customer-supplied cables for use with the system.

Table 1 provides a list of Ethernet cable standards. Ethernet cables are not supplied as part of your order. Ensure the cables that are used meet the minimum standards for the Ethernet port type.
Table 1. Ethernet cable standards
Ethernet adapter type Ethernet port type Connector Cable type Minimum standard Remark
On-board Ethernet ports 1 Gbps Ethernet port RJ45 Unshielded twisted pair (UTP) Cat 5e or Cat 6 (up to 100 meters)  
On-board Ethernet ports 10 Gbps Ethernet port RJ45 Unshielded twisted pair (UTP) Cat 6a or Cat 7 (up to 100 meters)  
2 Port 25 Gbps RoCE Adapter Card or 2 Port 25 Gbps iWARP Adapter Card 25 Gbps Ethernet port LC-SFP28 Transceiver (IBM feature) Optical fibre
  • OM3 (up to 70 m)
  • OM4 (up to 100 m)
  
2 Port 25 Gbps RoCE Adapter Card or 2 Port 25 Gbps iWARP Adapter Card 25 Gbps Ethernet port QSFP28 to SFP28 Passive Twinax DAC Cable (up to 2 m)
  • SFF-8432 transceiver specification
  • IEC60825-1 product safety specification
  • Operational temperature should be 0 deg C - 70 deg C. However, in some cases the temperature can reach to 85 deg C.
  
2 Port 25 Gbps RoCE Adapter Card or 2 Port 25 Gbps iWARP Adapter Card 10 Gbps Ethernet port RJ45 SFP+ connector (IBM feature) Unshielded twisted pair (UTP)
  • Cat 6a or Cat 7 (up to 100 meters
 The 25 Gbps Adapter card runs as a 10 Gbps port when using the RJ45 SFP+ connector.
2 Port 25 Gbps RoCE Adapter Card or 2 Port 25 Gbps iWARP Adapter Card 10 Gbps Ethernet port LC - SFP+ Transceiver (IBM feature) Optical fiber
  • OM2 (up to 60 meters) or OM3 (60 - 150 meters)
 The 25 Gbps Adapter card runs as a 10 Gbps port when using the LC - SFP+ Transceiver connector.
2 Port 25 Gbps RoCE Adapter Card or 2 Port 25 Gbps iWARP Adapter Card 25 Gbps Ethernet port DAC (Direct Attached Copper) DAC: Twin-ax copper cable (up to 2 m)
  • SFF-8432 transceiver specification
  • IEC60825-1 product safety specification
  • Operational temperature should be 0 deg C - 70 deg C. However, in some cases the temperature can reach 85 deg C.
 The 25 Gbps adapter ports can work with 10 Gbps and 25 Gbps DAC cables.