Huawei TaiShan 200 Motherboard
Something really interesting with the server is that it takes a more modern design approach. The motherboard does not extend to the rear of the chassis. Instead, the BMC and the networking (via OCP NIC 3.0 slots) are used to reach the rear and provide the I/O footprint.
The motherboard also has a number of standard connectors. We see TPM connectors, along with PCIe riser connectors. There are also power headers for internal hard drives and accelerators.
In the middle of the system, we get more risers and the storage mezzanine connector.
On the other side, we get power input directly to the motherboard and additional power headers for internal components.
Let us next explore the risers and the forest of cables in this system.
Huawei TaiShan 200 PCIe Risers
The PCIe risers in this system are a bit different. This is likely a configuration option since it would make a lot of sense to have risers with slots. In this system though, we have PCIe risers that have cabled I/O.
The risers are held in place by thumbscrews. These usually required us to use screwdrivers to disassemble.
Here is one of the risers. We did not take the heatsinks off to see, since if we break something getting replacement parts is effectively impossible, but our best guess is that these have retimers under them. Those would also be very large retimer heatsinks.
These risers are held in place mostly by pins to make them easy to service.
Here is a look at the middle riser:
The far riser, we are going to take a more extensive look at. Next, we will take a look at the HNS 25GbE adapter in that riser and the Broadcom SAS controller.