This article was originally published in April of 2009 at 10GbE.net.
One would think that after 30 years our industry would have developed a NIC naming convention for “dual-port.” Does a dual-port NIC mean your OS sees one or two interfaces? Do dual-port NICs mean that one port is active and the other is for fail-over? Can a dual-port run traffic through both port simultaneously? It all depends on who you talk to, and the product they’re selling.
- Chelsio’s N320E for $790 is an example of this type of card.
- Intel’s AF DA card for $799 appears to be another example of this class of card.
- Myricom’s 10G-PCIE2-8B2-2S+E for $995 appears to be the only example of this approach. Myricom utilizes two unique 10GbE controllers on the same PCI Express Gen2 NIC and a PCI Express bridge chip to break the slot into two unique NIC devices.
- Myricom’s 10G-PCIE-8B-2S+E for $795 is an example of this type of card. The fail over time is under 10 microseconds.
- Chelsio’s B320E Bypass adapter for $3,483 is similar but it can detect an OS/BIOS/System failure and make a hard switch over to the second port.