Direct Attach Copper Vs Fiber

Which to choose for 10gbe data center cabling.

Direct attach copper vs fiber.

The longer the distance the higher the awg rating should be. Sfp direct attach cable dac is a fixed assembly that is purchased at a given length. Generally 10gbe network can be achieved by 10gbase t copper module sfp fiber optical transceiver and sfp direct attach cables. Interchangeability as the development of copper cable technology direct attach copper cable is interchangeable and hot swappable with fiber optic modules.

It can be used to connect switches to routers or servers for. It consists of shielded twinax copper cable with pluggble connectors on either end with varying gauges from 24 to 30awg. The sfp interface accepts along with hot pluggable small footprint optical transceivers a direct attach cable 10gsfp cu which replaces two optical modules and a connectorized optical fiber with a twinaxial copper cable assembly. Offset compared with the fiber.

10g sfp fiber network option. Cost effective supporting such multiple protocols as gigabit 10g ethernet 8g fc fcoe and infiniband direct attach copper cable is a cost effective solution over optical transceivers. Before we go any further it s better to take a glimpse of what sfp direct attach cable dac are and what role they play. Reading this article to get a further understanding of these three products.

The difference between the offsets is about 1 ns copper shows an offset of 3 ns. Both types connect directly into an sfp housing. The 10gsfp cu option is defined for 10gbe applications over passive copper with a reach of 8 5m. Reading this article to get a further understanding of these three products.

Also known as direct attach da direct attach copper dac 10gsfp cu 10gbase cr 10gbase cx1 sfp or 10gbe cu sfp cables. 10gbe network can be achieved by 10gbase t copper module sfp fiber optical transceiver and sfp direct attach cables. Apart from copper network option sfp modules and the matching fiber cables are needed to connect 10gbe switch over 100m to achieve 10g ethernet operation. A sfp dac cable also known as sfp twinax copper cable is effectively viewed as a transparent cable to the switch.

We consider the copper direct attach cable to have zero latency in the sfps since the twinax cable is soldered directly to the pins on the sfp module itself. Short direct attach cables use a passive twin ax cable assembly while longer ones sometimes called active optical cable aoc use short wavelength optics. 10gbase t vs sfp vs dac. Direct attach copper cable short for dac cable is a kind of fixed high speed copper cable assembly.