FS N9510-64D 64-port 400GbE Switch Internal Overview
Here is an overview of the switch internals. We are going to do something a bit different this time and work from the rear (left below) to the front (right below).
Here is a quick look at one of the hot-swap fan connectors.
In this switch, there are two levels of fan control boards each powering four fan modules.
Inside the switch, there are two main baseboards.
The middle baseboard has the Intel Xeon D-1627 (4 core/ 8 thread) management processor. Next to it is a single M.2 SSD for OS storage but there is a second unpopulated slot.
Moving up to the main switch and QSFP-DD PCB, we can see Lattice has some placements here.
There is also a Xilinx AMD Artix-7 FPGA.
The big feature on this PCB is the massive heatsink that covers the main switch chip.
The main switch chip is the Broadcom Tomahawk 4. What is fascinating here is that this switch chip is socketed in a TE Connectivity LGA8371. We covered this solution more in our This is a Broadcom Tomahawk 4 64-port 400GbE Switch Chip piece.
As a quick one here, the QSFP-DD cages above can be seen with large cage heatsinks. That is one of the big differences between QSFP-DD and OSFP since OSFP usually has the heatsinks on the optical modules/ DACs.
Here is the 4th Gen Intel Xeon Scalable, codenamed “Sapphire Rapids” next to the Broadcom Tomahawk 4.
Internal grounding seems significant between the PCBs.
Here is another photo we had of two connecting boards.
Next, let us get to putting together the network and getting everything working.