Searching for SFP+ NICs compatible with Windows, Ubuntu, and FreeNAS.
Searching for SFP+ NICs compatible with Windows, Ubuntu, and FreeNAS.
I’m evaluating my current configuration. My main PC runs Windows 10 with a Dev server, while the Ubuntu 19.04 FreeNAS machine is connected via a gigabit switch using CAT 6a cables. A few months back, installing Mellanox ConnectX-2 NICs caused frequent problems—BSODs and driver issues on both devices made me give up. Now the FreeNAS works fine, but neither device recognizes the NICs when powered on. I’m not interested in troubleshooting those interfaces in my main PC. Research suggests ConnectX-2 models are unreliable; newer options or alternative products would be better. I’m considering SFP+ NICs and have seen Mellanox ConnectX-3 and similar models for about $40 each on eBay, though I’m hoping for cheaper alternatives. I’m also thinking about the MikroTik CRS305-1G-4S+ switch with four SFP+ ports and a wall port. Should I look for a 10G switch using CAT cables and opt for NICs that support 10G speeds instead?
Consider Supermicro AOC-Stgn-i2s (2 x 10g SFPD+) priced at 58$ each. Review details are available on UnixPlus and The Server House. Intel drivers should ensure better compatibility. Higher-end options may require Aquantia-based cards, which start around 70$ but are listed at 80$. The SFPD+ feature often leads to cheaper switches.
No significant changes occur when switching from SFP+ to RJ-45 connections. Each has its own benefits depending on your needs.
rj45 consumes more energy over extended ranges. The sfp+ offers reduced latency in theory and lower power usage. 10G switches come at a higher cost, typically between $40 to $50 per port, whereas 24-port sfp+ models are available around $300 (about $10 per port). For example, the new Quantax LB6M costs $300 and supports 300 ports. Alternatively, you can purchase 48 x 10G ports plus one 40G QSFP+ for $450, or similar options are listed on Amazon.