+1. Cisco calls them Twinax, HP calls them DACs. I don't know what
anyone else calls them as it hasn't come up in conversation for me.
Cisco appears to offer them in 1, 1.5, 2, 2.5, 3, and 5 meter passive,
as well as 7 and 10 meter active. HP has them in 1, 3, 7, 10, and 15
meter; no idea what the passive/active breakdown might be (they don't
appear to offer that information as freely). I've mostly used the
3-meter HP DACs so far, and I've been rather happy with them,
particularly the cost savings under 2x 10gbit SFP+ fiber transceivers.
Jima
On 2014-01-30 19:25, Chris Balmain wrote:
You may wish to consider twinax for short distance 10G over copper with
SFP+ at both ends
http://en.wikipedia.org/wiki/Twinaxial_cabling#SFP.2B_Direct-Attach_Copper_.2810GSFP.2BCu.29
Typically marketed as "direct-attach" (you can't remove the cables from
the transceivers, it's all integrated)
On 31/01/14 12:26, james jones wrote:
I would like to know if anyone has seen one of these? If so where?
Also if
they don't exist why? It would seem to me that it would make it a lot
easier to play mix and match with fiber in the DC if they did. Would
be so
hard to make the 1G SFPs faster (trying to be funny here not arrogant).
-James
