Does this even exist? I've looked around on ebay for it, but can't seem to come across it. Musing about getting some cards, but don't want to run fiber.
Perhaps it stemmed from understanding of earlier generation of SFP being able to support fiber and copper SFP transceivers? Don't forget the SFP+ Direct Attach Copper is also copper except not in the usual Cat5/6 copper wires and RJ-45 connectors.SFP+ is fiber, 10GBASE-T is copper, how SFP+ 10GBASE-T which is both fiber and copper thing exist?
Yeah, you are right. I made a mistake, thank you for correcting me.Perhaps it stemmed from understanding of earlier generation of SFP being able to support fiber and copper SFP transceivers? Don't forget the SFP+ Direct Attach Copper is also copper except not in the usual Cat5/6 copper wires and RJ-45 connectors.
SFP or SFP+ did not denote that it's fiber, it's small form-factor pluggable, not something fiber pluggable.
There are many others. Check the Cheap 1+10Gb Switch thread for options. I picked up a pair of Dell 8024F (20 x SFP+, 4 x SFP+ and 10GbaseT combo) for under USD900 each IIRC, and they're often cheaper in the US.Not exactly the cheapest solution, however this DLINK is the only switch I've found that can do both 10GB-T and 10GB SFP+. This is most likely the switch I'll purchase since I have one of the SuperMicro Xeon-D 1540 boards that only support 10GB-T. As of this posting it can be had for about 1100$ US.
I concur that running twinax between racks is not desirable. If you know that you will only ever be using them within the same rack for servers to connect to ToR switches then it makes sense.We use some SFP+ DAC cables to connect servers to switches. Nominal initial cost was a bit better than fiber (2x SFP+ modules + single mode jumper) and was chosen because of that. Flash foward 3yrs and when gear is swapped out and I need a 5M DAC cable instead of a 3M cable, now I need to buy a new cable which ends up being more expensive than if we just would have spent the $5 extra initially to get SFP+ modules instead. Add in the girth issues with the DAC cables...image the hole requirements for 30 DAC cables vs 30 fiber cables.
Small scale where you are only gonna ever need 4 or less cables, I'd consider DAC but anything over that and I would rather just get the SFP+ modules and save myself the headache.