@voltagex @jpm 10m runs? If you’re using SFP+ compatible slots then it might be easier to use 10G DACs (copper pigtails) tbh. If you’re making the leap to 25G then sure, go for 1310nm SMF patch cables. You’ll want LC connectors on those cables unless you’re doing patch panel shenanigans, in which case you want SC. Make sure you grab some 7dB attenuators too given how short the distances are. Use FS.com, accept no substitutes

@ThermiteBeGiants @voltagex 5M is the cross-over point between DAC is cheaper and optical is cheaper, because beyond 5M they are typically "active" DACs, rather than just literally connecting the SGMII channels together using a coax cable

@jpm @ThermiteBeGiants @voltagex DACs are more difficult to work with due to the thicker cables. Future proofing was a requirement, which is also an argument against DACs.

@puck @jpm @voltagex bending radii on DACs shouldn’t be much worse than SMF, and the real expense when upgrading isn’t the fibres, it’s the SFPs and the hardware around them. It’s worth analysing alternatives at this stage of the process.

@ThermiteBeGiants @jpm @voltagex Having deployed a rack of gear using DAC at work previously, we've decided never again. Fibre isn't that much more expensive!