On 06/03/14 17:44, Skylar Thompson wrote:
I'm not aware of any 10GBASE-T <-> SFP+. I think you might be thinking
of SFP+ direct-attach (DA) cabling, where each end of the cable is a
SFP+ transceiver. My experience is that the total cost of 2x SFP+ NICs
plus a DA cable is about half the cost those NICs, optical cable, and 2x
SFP+ SR transceivers. You do want to be very careful about compatibility
- we've had problems using the HP SFP+ DA cables with a HP zl switch and
a Intel SFP+ NIC in a Dell server.
Say you have two servers directly connected to each other...
server(NIC) - SFP+ module - fiber cable - SFP+ module - (NIC)server
or
server(NIC) - Twinaxial (DA) cable - (NIC)server
The DA cable you are talking about have the SPF+ module hard attached to
the ends.
NIC ~$300 x2
SFP+ Module ~$50 x2
Fiber Patch ~$20 x1
$720
or
NIC ~$300 x2
Twinaxial ~$90 x1
$690
$30 delta... ehh... it's a wash... :)
It used to be a lot different. The last datacenter I put together (2
years ago), the 10G SFP+ modules were ~$1000 each. You can get them for
between $50 and $100 now.
--
Mr. Flibble
King of the Potato People
http://www.linkedin.com/in/RobertLanning
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