Lenovo ThinkSystem SR650 V3 7D75 User Manual page 396

Front + middle backplanes: 24 x NVMe + 8 x NVMe
This section provides cable routing information for the 24 x NVMe (Gen 4) + 8 x NVMe configuration with
three retimer cards.
Connections between connectors:
Front backplane cable routing
Figure 389. NVMe cable routing to onboard connectors and retimer
From
Backplane 1: NVMe 0-1
1
Backplane 1: NVMe 2-3
2
Backplane 1: NVMe 4-5
3
Backplane 1: NVMe 6-7
4
Backplane 2: NVMe 0-1, 2-3
5
Backplane 2: NVMe 4-5, 6-7
6
Backplane 3: NVMe 0-1
7
Backplane 3: NVMe 2-3
8
Backplane 3: NVMe 4-5, 6-7
9
ThinkSystem SR650 V3 User Guide
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↔ ↔ ↔
, , , ...
1 1 2 2 3 3
To
Onboard: PCIe 10
Onboard: PCIe 9
Onboard: PCIe 8
Onboard: PCIe 7
Onboard: PCIe 6, 5
Onboard: PCIe 3, 4
Onboard: PCIe 2
Onboard: PCIe 1
Retimer: C0, C1
↔
n n