Anyone have experience converting from 1G LAN to 2.5 or even 10?
Going from 1 G to 2.5 G is fairly cheap these days. You can almost certainly use the same cabling, even when you’ve got only Cat.5e cabling. While you can do 10 G over copper, I wouldn’t suggest doing that, since it consumes quite a lot of power compared to both 1 G and 2.5 G. You’d need Cat.6E for reliable 10 G over copper.
Going from 1 G to 2.5 G is fairly cheap these days. You can almost certainly use the same cabling, even when you’ve got only Cat.5e cabling. While you can do 10 G over copper, I wouldn’t suggest doing that, since it consumes quite a lot of power compared to both 1 G and 2.5 G. You’d need Cat.6E for reliable 10 G over copper.