Lenovo ThinkSystem SR665 - Page 120

The following table shows the cable connections for all configurations:
Configuration 1: (front drive bays only)
Front: three 8 x 2.5-inch SAS/SATA backplanes (BP 1, BP 2, and BP 3)
Config.
Front BP
System board
Storage controller
PCIe switch
1
BP1: NVMe 0–1
PCIe 1, PCIe 2
BP1: NVMe 2–3 PCIe 3
BP1: NVMe 4–5, NVMe 6–7
Slot 1
C 0, C 1
BP2: NVMe 0–1, NVMe 2–3
Slot 2
C 0, C 1
BP2: NVMe 4–5
PCIe 4, PCIe 5
BP2: NVMe 6–7 PCIe 6
BP3: NVMe 0–1 PCIe 7
BP3: NVMe 2–3 PCIe 8
BP3: NVMe 4–5, NVMe 6–7
Slot 4
C 0, C 1
The following illustration shows the cable routing for the configuration 4. Connections between connectors:
1 ↔ 1 , 2 ↔ 2 , 3 ↔ 3 , ... n ↔ n
116 ThinkSystem SR665 Setup Guide