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A comment on Intel's fastest connector to date uses light to transfer data at 1.6Tbps. Parent comment

Re:Intel's fastest connector to date uses light to transfer ... by DiabloD3 on Tuesday March 11, 2014 @09:59AM (#7379207)
They still use copper on 10gbit in some places for rack-local connections through both cat6 and passive sfp+ cables
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Re:Intel's fastest connector to date uses light to transfer ... by ghshephard on Tuesday March 11, 2014 @01:20PM (#7380703)
Yup, and, ironically, my last 10Gig deployment (2009) was 100% copper from the server to the switches - but it was a pain in the butt trying to get it to work, and I don't think I would ever try doing anything but fiber between my network elements for 10 Gig.
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