I'm looking at some 10gbe goodness and am interested in the copper cables and interfaces. At this point is it a given that 10GSFP+Cu supersedes 10GBASE-CX4 for short lengths due to form factor and 10GBASE-T providing longer cable lengths over Cat6/a? What, if any, beneficial characteristics does CX4 offer?
10GBASE-CX4 gear can be found at resellers used now at $100 to $200 per port and the infiniband sff8470 cable is also cheap (~$15) and easy to buy. Does CX4 gear pricing reflect it being on the market for several years now and make it a soon worthwhile proposition for high bandwidth solutions over ethernet? Or will SFP+ gain popularity and CX4 nics and modules risk end-of-lifing?
How do 10GBASE-KX4 and 10GBASE-KR relate to all this?
10GBASE-CX4 gear can be found at resellers used now at $100 to $200 per port and the infiniband sff8470 cable is also cheap (~$15) and easy to buy. Does CX4 gear pricing reflect it being on the market for several years now and make it a soon worthwhile proposition for high bandwidth solutions over ethernet? Or will SFP+ gain popularity and CX4 nics and modules risk end-of-lifing?
How do 10GBASE-KX4 and 10GBASE-KR relate to all this?