Rear Panel Components (Half Configuration of NPUs)
Figure 2-9 shows the components on the rear panel of an Atlas Atlas 800 AI training server (model 9000).
1 |
PRM 1 |
2 |
FlexIO card A |
3 |
PRM 2 |
4 |
Power supply unit (PSU) |
5 |
FlexIO card B |
- |
- |
- PRM 1 (houses full-height PCIe cards) and PRM 2 (houses half-height PCIe cards) support different types of PCIe cards. The figure is for reference only.
- FlexIO card A supports two 100GE or four 25GE NICs, and FlexIO card B supports two 100GE NICs. This figure is for reference only.
FlexIO cards A and B are not hot-swappable. Power off the server before replacing them.
1 |
Ports on FlexIO card A |
2 |
Management network port |
3 |
Serial port |
4 |
VGA port |
5 |
USB 3.0 port |
6 |
LOM ports |
7 |
PSU socket |
8/9/10/11 |
Ports on FlexIO card B |
Port |
Type |
Quantity |
Description |
|---|---|---|---|
VGA port |
DB15 |
1 |
The VGA port is connected to a terminal, such as a monitor or physical KVM. NOTE:
If the VGA ports on both the front and rear panels are connected, the VGA port on the front panel is used preferentially. |
USB port |
USB 3.0 |
2 |
The USB ports allow USB devices to be connected to the server. NOTE:
Before connecting an external USB device, check that the USB device functions properly. A server may operate abnormally if an abnormal USB device is connected. |
Management network port |
RJ45 |
1 |
This 1000 Mbps Ethernet port is used for server management, and supports 10/100/1000 Mbps auto-negotiation. |
Serial port |
RJ45 |
1 |
The serial port is used as the system serial port by default. You can set it as the iBMC serial port by using the iBMC command. This port is used for debugging. |
LOM port |
RJ45 |
4 |
LOM ports provide four GE electrical ports. |
Ports on FlexIO card A |
100GE optical port (QSFP28) |
2 |
FlexIO card A provides two 100GE optical ports. |
25GE optical port (SFP28) |
4 |
FlexIO card A provides four 25GE optical ports. NOTE:
The 25GE optical ports support speed auto-negotiation to 10GE. Optical modules of different rates are used. |
|
Ports on FlexIO card B |
100GE optical port (QSFP28) |
2/4 |
Each FlexIO card B provides two 100GE optical ports, and two FlexIO cards B provide a maximum of four 100GE optical ports. NOTE:
|
PSU socket |
- |
4 |
Determine the number of PSUs based on actual requirements, but ensure that the rated power of the PSUs is greater than that of the server. You are advised to configure four PSUs to ensure reliable device operating. When two PSU is used, System > Power > Power Supply Info > Power Supply Settings cannot be set to Active/Standby on the iBMC WebUI. |
