On 4 July 2016 at 22:09, Russell Coker via luv-main <[email protected]> wrote: > One of my clients is getting a server that is not going to immediately have > 10GigE but will probably have it in the not too distant future. Which of the > following 10GigE cards from Dell would be most suitable? > > Note that the 10GigE switch is yet to be purchased. Some of these cards > appear to use fiber and some use twisted-pair. Obviously buying a network > adapter now is going to constrain the choice of switches in the future. > > Any suggestions? > I think that: Fibre usually means long distances 400m to 10Km. Direct attach is very short connecting SFP+ slots together 6m? 10G Base-T is Cu (Cat -6a needed for full 100m range) https://en.wikipedia.org/wiki/10_Gigabit_Ethernet#10GBASE-T
but Cu is usually cheaper all round and gets cheaper. I believe it is still pretty hot but expectations are it will get cheaper/cooler as technology improves in the next few years. So if you are just connecting machines around an office - go Copper - if you are terminating a external link from another building/site- go SFP+ Often the bigger switches will be mostly Cu base-T with some SFP+ for the main connecting links. Some run Linux! https://cumulusnetworks.com/cumulus-linux/overview/ Interested in other opinions. Andrew _______________________________________________ luv-main mailing list [email protected] https://lists.luv.asn.au/cgi-bin/mailman/listinfo/luv-main
