Introduction to SFP+ Direct Attach Cable

As the technology of virtualization advanced further, more bandwidth and increased data transmission are needed to accommodate the ever-growing number of operating systems and applications residing on individual servers in Data Center today. As a result, a cost-effective method to provide more bandwidth is urgently needed for Date Center. SFP+ direct attach cable as one of the high-speed data transmission solution for data center interconnection is now widely used for 10GbE. This post is going to give an introduction to SFP+ DAC.

What Is SFP+ Direct Attach Cable?

As the name implies, SFP+ direct attach cable uses the inexpensive copper twinaxial cable with SFP+ connectors on both sides, which is also based on SFP+ MSA (multi-source agreement), providing 10 Gigabit Ethernet connectivity between devices with SFP+ interfaces. In brief, it integrates SFP+ compatible connectors with a cable into a low-latency, energy-efficient, and low-cost solution. DAC is available in several lengths up to 10 meters and are currently the best cabling option for short 10 Gigabit Ethernet connections.

Types of SFP+ Direct Attach Cable

Generally, there are three types of 10G SFP+ direct attach cable: 10G SFP+ passive copper twinax cable (PCC), 10G SFP+ active copper twinax cable (ACC), and 10G SFP+ active optical cable (AOC). They are suitable for highly cost-effective networking connectivity within a rack and adjacent racks.

10G SFP+ Passive Copper Cable – SFP+ passive DAC cable offers a direct electrical connection between corresponding cable ends. It is an ideal choice for up to 12 meters. However, because of the problems of bulkiness, weight and signal integrity, it is often limited within seven and ten meters.

10G SFP+ Active Copper Cable – SFP+ active DAC cable provides signal processing electronics to avoid signal issue, thus to improve signal quality. And it can transmit data over a longer distance than SFP+ passive copper cable, which can extend to 15 to 20 meters.

10G SFP+ Active Optical Cable – Nowadays the Active Optical Cable (AOC) is accelerating data connectivity for storage, networking, and HPC (High Performance Computing) applications. It leverages fiber optic technology for the transmission of data while reducing the weight, density and power consumption of traditional copper solutions.

10GBASE SFP+ Direct Attach Cable

More Advantages Than 10GBASE-T

Currently, 10GBASE-T is not supported for OneConnect adapters due to power requirements and high latency of 10GBASE-T PHY chips. When compared with it, SFP+ direct attach cable has more advantages which is introduced below.

SFP+ Technology Ensures Optimal Performance and Lowest Latency – New dynamics within data centers mandate that the cable infrastructure handles latency sensitive applications anywhere. When comparing 10GBase-T technology with the alternative SFP+ technology, it is evident that SFP+ is the right technology to ensure optimal performance with lowest latency in the data center.

SFP+ technology lowers the power budget – SFP+ technology delivers far lower power usage than the 10GBase-T technology. The cost saving becomes obvious when deploying from 1000 to 10,000 cables in the data center.

FS.COM SFP+ Direct Attach Cable Solution

FS.COM offers high-speed direct attach solution for data center interconnection, especially the SFP+ direct attach cables for 10GbE with features such as optimizing power consumption and supporting modularity and scalability. Recently, FS.COM offers greatly discounts for Direct Attach Cable, which will save you a lot of money. And each kind of SFP+ Direct Attach Cables is full in stock so that you can make bulk orders. Of course, the more you buy, the more discounts you will get. For more information, Please contact us directly over e-mail