Migrating to 400G? Choosing the Right Option (Part 2)
Posted by Admin on 2023 Jul 19th
400G ToR to Server/storage Connectivity options
Optics Type: 400G-Direct Attach Cables (DAC)
Description: QSFP-DD (Double-Density) passive copper cable assemblies provide 8 data transmission channels at speeds up to 25Gbps/lane NRZ and 50Gbps/lane PAM4. It enables 200G/400G in an application, with lengths 0.5-2 meters..
Fiber Type & fiber connector: Usually high-speed copper pairs
Use Case: It is a cost-effective within-rack connectivity option for short reach (up to 3m).
1- 400G QSFP-DD to 400G QSFP-DD DAC
2- 400G QSFP-DD to 4x 100G QSFP56 Breakout DAC
3- 400G QSFP-DD to 2x 200G QSFP56 Breakout DAC
4- 400G QSFP-DD to 8x 50G SFP56 Breakout DAC
