Lenovo hardware overview
This section provides a comprehensive overview of the system layout and configuration details of the Lenovo hardware in the IBM Fusion HCI.
The following picture shows the five different factory configurations for IBM Fusion HCI with service node:
- Ensure that IBM Fusion is installed in a restricted access location, such that the area is accessible only to skilled and instructed persons with proper authorization.
The following table lists all the nodes and switches used in the IBM Fusion HCI along with their respective rack unit
locations:
To know more about a stand-alone IBM Fusion HCI MTM (Gen 1), see Hardware overview of a single IBM Fusion HCI MTM .
| Server / Switch | Description | Rack position |
|---|---|---|
| Compute-only server / Compute-storage server (Model 9155-C10 and 9155-C14) | See Compute-only and compute-storage server model servers. | RU2 to RU7 |
| Service node (Model 9155-B01) | See Service node | RU23 |
| GPU Server (Model 9155-G03) | Optional GPU accelerated servers for AI workloads that make use of either the AMD MI210 PCIe adapter card or NVIDIA L40S or NVIDIA H100 NVL GPUs (1-8 GPUs per server). There is no minimum quantity GPU servers, and there is a maximum of four GPU servers in a stand-alone rack. | RU8 to RU13 and RU24 to RU32 |
| Network switches | See Network switches and configuration. |
|
Hardware configuration
You have two options for obtaining a rack: either you can buy a rack
directly from the IBM, or you can arrange for a rack yourself. For more information about rack
options, see IBM Fusion HCI rack ordering options.
- Rack configuration
- The rack configuration includes the physical arrangement of servers, storage systems, and
network devices.
Rack configuration Description Rack size 42U Networking - 2x Ethernet high-speed switches
- 2x Ethernet management switches
Compute only or compute-storage servers - 6x servers with 2-10 NVMe drives per server
- KVM connected to the service node
- Servers in RU2, RU3, and RU4 become the OpenShift® control plane servers
- You can choose any one of the following server configuration options:
- 6x 32 core servers
- 6x 64 core servers
- 3x 32 core servers + 3x 64 core servers
Storage 2x 7.68 TB NVMe PCIe drives or 3.84 TB NVMe drives (no mixing within a rack)
- Scalable options
- To customize your rack configuration, the following options are available:
Table 1. Rack configuration Description Additional compute-storage servers Add up to 10 additional compute-storage servers, for a maximum total of 16 servers Additional storage Add more storage to compute-storage servers using: - 7.68 TB NVMe PCIe drives (up to 10 drives per server)
- 3.84 TB NVMe PCIe drives (up to 10 drives per server)Important: No mixing of 7.68 TB and 3.84 TB drives is allowed within a rack.
Additional compute power Add compute-only servers to increase compute power
Power Distribution Unit (PDU) positions in IBM Fusion HCI
Use this section as a guidance for PDU positions in the IBM Fusion HCI. Additional PDUs may be added depending upon the configuration of the system. These additional PDUs get horizontally mounted in the space above PDU 6.
Important: There may be more than 6 PDUs for racks that have one or more GPU servers.
Those servers are added in pairs, horizontally mounted, and placed on top of PDUs 5 and 6.
All the PDUs that are installed in the rack are needed and all of them must be connected to power.
Note: For independent or redundant power feeds, the two power sources must be split between the
left and lower (odd numbered) PDUs and the right and upper (even numbered) PDUs.
For
more information about the line cords for power connections, see Supported PDU power cords. For more information about power prerequisites for IBM Fusion, see General power information.There are two
possible models of the PDU and the one you get depends on your power connection:
- For all single-phase power and for wye-wired three-phase power, there is one PDU feature code. See Supported PDU power cords are ECJN with Souriau inlet table in Supported PDU power cords.
- For delta-wired three-phase power (typically used only in N America), there is a different PDU feature code. See Supported PDU power cords for PDU feature codes ECJQ with Amphenol inlet table in Supported PDU power cords.
To know more about power distribution in IBM Fusion HCI MTM (Gen 1), see Hardware overview of a stand-alone IBM Fusion HCI.
Drives and usable storage capacities
To calculate the usable storage capacities for drives, use the IBM Storage Modeler (StorM) tool.
Weight of miscellaneous rack parts
The following table lists the weight of the rack configs that include miscellaneous parts beyond
individual components like cables, Constellation rack and so on:
| Component | Weight (lbs) | Weight (kg) | Model |
| SN3700 200GbE switch | 30.8 | 14.0 | S05 |
| SN3700C switch | 27.5 | 12.5 | S01 |
| SN2201 1GbE switch | 16.3 | 7.4 | S04 |
| 7316-TF5 console | 12.0 | 5.5 | TF5 |
| AS4610 switch | 11.8 | 5.4 | S02 |
| SR665 GPU server | 85.5 | 38.9 | G01 |
| SR645-0 32-core 256GB server | 39.1 | 17.8 | C00 |
| SR645-2 32-core 256GB server | 40.2 | 18.3 | C01 with 2 drives |
| SR645-10 32-core 256GB server | 44.6 | 20.3 | C01 with 10 drives |
| SR645-0 64-core 1024GB server | 39.1 | 17.8 | C04 |
| SR645-2 64-core 1024GB server | 40.2 | 18.3 | C05 with 2 drives |
| SR645-10 64-core 1024GB server | 40.2 | 18.3 | C05 with 10 drives |
| SR630 V3 32-core | 45.9 | 20.8 | C10 |
| SR630 V3 64-core | 45.9 | 20.8 | C14 |
| SR630 V3 8-core | 40.6 | 18.5 | B01 |
| Constellation rack The 9155-R42 is also known as the 7965-S42 used by Power. For hardware specifications, see Model 7965-S42 rack specifications. |
398.2 | 181.0 | R42 |
| Intelligent switched PDU+ | 9.5 | 4.3 | NA |
| All cables, rails, and so on. | 395.5 | 179.8 | NA |
| SR675 V3 GPU server | 72.1 lbs | 32.8 kg | G03 with 1 GPUs |
| SR675 V3 GPU server | 87.5 lbs | 39.8 kg | G03 with 8 GPUs |