(1) How to choose the passive SFP+ DAC high-speed cable and active cable
The passive SFP+ DAC high speed cable contains no electrical components and therefore requires little power supply to operate. Instead, active cables require dc power to integrate their signal processing circuits into their built-in connectors, making them more expensive to use. Therefore, when the distance is less than 7 meters, it is recommended to use passive SFP+ DAC high-speed cable; when the distance is more than 7 meters, the use of active cable is more appropriate.
(2) Can use SFP+ DAC compatible high-speed cable on Cisco switch
Yes, just like compatible optical modules, compatible SFP+ DAC high-speed cables will be built to the same industry manufacturing standards as cisco’s high-speed cables, and each eligible SFP+ DAC high-speed cable will be tested with cisco equipment to ensure the network runs smoothly. By buying the SFP+ DAC high-speed cable from a reliable manufacturer, you can buy brand-quality products and save money at the same time.
(3) Can the SFP+ DAC high-speed cable be used in the SFP port?
SFP+ DAC high-speed cable can be backwards-compatible with SFP ports to ensure the normal operation of the network. However, the SFP DAC high-speed cable is not compatible with the SFP+ port. The SFP DAC high-speed cable can be plugged into the SFP+ port, but not for the 10G data transfer rate.
How do I deploy SFP+ DAC high-speed cables in a data center?
SFP+ DAC high-speed cable is a connection cable for realizing high-speed interconnection communication over short distances. It is widely used in data centers and server rooms. To make your SFP+ DAC high speed cable work, here’s how to deploy the SFP+ DAC high speed cable in your data center.
(1) Calculate the length of SFP+ DAC high-speed cable in advance
When deploying the SFP+ DAC high-speed cable in an 84-inch, 45RU cabinet, it is conservatively estimated that the cable length from the top to the bottom of the cabinet is approximately 7 feet (2.1m) and the cable length between the two adjacent ports is approximately 1.5 feet (0.45m). If a cabinet has two ToR switches and 20 2U SFP+ NIC servers, the maximum required SFP+ DAC high-speed cable should be 2.1+2×0.45≈3m. At this point, you can purchase 3m SFP+ DAC high-speed cable.
(2) Do not exceed the bending radius of the SFP+ DAC high-speed cable
When deploying an SFP+ DAC high speed cable, make sure the cable is within the minimum bending radius standard. Each SFP+ DAC high speed cable has a different minimum bending radius according to the USA wire gauge.
(3) Protect your SFP+ DAC high-speed cable with management tools
In order to prevent SFP+ DAC high speed cables from sagging due to excessive load, it is necessary to use cable management or stress relief tools. The stress relief tool can not only ensure that the bending radius of the SFP+ DAC high-speed cable is maintained within the normal range, but also facilitate the cable path to be orderly and orderly. At the same time, the cable management tool such as the harness can be used to tie the high-speed cable harness to the stress relief tool, which is conducive to securing the cable.
