EnglishEspañolFrançaisDeutschPortuguês

fibermart-news_banner_9.jpg

 

Tuesday 10 July, 2018 | RSS Feed

40G QSFP+ Direct Attach Copper Cabling

by www.fiber-mart.com

40G QSFP+ Direct Attach Copper Cabling

 

In today’s network building, requiring higher speeds, greater scalability and cost-effective cabling solution is preferable. Direct Attach Cable(DAC) is a kind of optical transceiver assembly widely applied in storage area network, data center, and high-performance computing connectivity etc and high density cabling interconnect system capable of delivering an aggregate data bandwidth of 40Gb/s,therefore, It is the cost-effective way to upgrade from 10G to 40G or 40G to 40G interconnect connection.

 

40G QSFP+ Direct Attach Copper Cable (DAC) Basics

 

40G QSFP+ Direct Attach Copper Cable (DAC) is a high speed twinax cable with QSFP+ connector on either end of the cable. It is designed to meet emerging data center and high performance computing application needs for a short distance and high density cabling interconnect system capable of delivering an aggregate data bandwidth of 40Gb/s. The maximum transmission distance of QSFP+ direct attach copper cable is 10 meters, which makes the cable suitable for in-rack connections between servers and Top-of-Rack (ToR) switches because they often require shorter distances and not routed to the Main Distribution Frames.

 

How to Use 40G QSFP+ Direct Attach Copper Cable

 

According to the connector types on both ends. One is QSFP+ to 4 SFP+ direct attach breakout copper cable, and the other is QSFP+ to QSFP+ direct attach copper cable. In fact, it is not common for there is a third type QSFP+ direct attach copper cable called QSFP+ to 4 XFP breakout cable. For a QSFP+ to 4 SFP+ direct attach breakout copper cable, it has a QSFP+ connector on one end and four SFP+ connectors on the other end. In terms of a QSFP+ to QSFP+ direct attach copper cable, it has a QSFP+ connector on both ends of the cable. When we use a fiber optic transceiver and patch cable to establish a fiber link, we should firstly plug the transceiver to the switch and then plug the patch cable to the transceiver. But for a QSFP+ direct attach copper cable, either SFP+ connector or QSFP+ connector, before building the network, it is necessary to buy 40G DAC cables from reliable QSFP cables supplier and manufacturer.can be both directly inserted into the switch and don’t need a transceiver at all, which provides a really cost-effective solution for interconnecting high speed 40G switches to existing 10G equipment or 40G switches to 40G switches.

 

40G QSFP+ to 4 SFP+ Direct Attach Copper Cabling

 

The move from 10G to 40G Ethernet will be a gradual one. It is very likely that one may deploy switches that have 40G Ethernet ports while the servers still have 10G Ethernet ports. For that situation, we should use a QSFP+ to 4 SFP+ direct attach breakout copper cable.In 40G to 40G connection, QSFP+ to QSFP+ direct attach copper cables are suitable for very short distances and offer a highly cost-effective way to establish a 40G link between QSFP+ ports of QSFP+ switches within racks and across adjacent racks. These QSFP+ copper cables connect to a 40G QSFP port of a switch on one end and to another 40G QSFP port of a switch on the other end. It is noted that the distance between the two switches is within the cable length.  These cables connect to a 40G QSFP Port of a switch on one end and to four 10G SFP+ ports of a switch on the other end, which allows a 40G Ethernet port to be used as four independent 10G ports thus providing increased density while permitting backward compatibility and a phased upgrade of equipment. As a lower cost alternative to MTP/MPO breakouts for short reach applications up to 5 meters, it helps IT organizations achieve new levels of infrastructure consolidation while expanding application and service capabilities.

 

40G QSFP+ to QSFP+ Direct Attach Copper Cabling

 

QSFP+ to QSFP+ direct attach copper cable are suitable for very short distances and offer a highly cost-effective way to establish a 40G link between QSFP+ ports of QSFP+ switches within racks and across adjacent racks. These cables connect to a 40G QSFP port of a switch on one end and to another 40G QSFP port of a switch on the other end. Supporting similar applications to SFP+, these four-lane high speed interconnects were designed for high density applications at 10Gb/s transmission speeds per lane. One QSFP+ to QSFP+ direct attach copper cable link is equivalent to 4 SFP+ cable links, providing greater density and reduced system cost. Passive and active QSFP+ to QSFP+ direct attach copper cables are both available. With a active QSFP+ to QSFP+ direct attach copper cable assembly, the connection is capable of distances of up to 10 meters.

 

Why Use 40G QSFP+ Direct Attach Copper Cable (DAC)?

 

For 40G short reach applications, 40G QSFP+ direct attach copper cable provides simple and inexpensive cabling solution.

The main advantages in following.

  •  Robust
  •  Cheap
  •  Low-power Consumption
  •  Easy Operation

 

Conclusion

 

With the wide deployment of 40 Gigabit Ethernet, the 40G QSFP+ direct attach copper cables are becoming more and more popular due to the compact size, low power and cost-effectiveness. Fiber-Mart supplies various kinds of high speed interconnect DAC cable assemblies including 10G SFP+ Cables, 40G QSFP+ Cables, and 120G CXP Cables. All of our direct attach cables can meet the ever growing need to cost-effectively deliver more bandwidth, and can be customized to meet different requirements. For more information, welcome to visit www.fiber-mart.com.or contact us .E-mail: [email protected]

 

 






Other news for Tuesday 10 July, 2018


View all news for Tuesday 10 July, 2018 on one page




News for Monday 09 July, 2018


View all news for Monday 09 July, 2018 on one page




Recent News




News Archive - See All News from Fiber-Mart.COM


Copyright © 2009-2021 Fiber-MART.COM. All Rights Reserved.
Fiber-MART.COM Secure Certificate
Product Tags: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0-9