Front + middle backplanes: 24 x NVMe + 8 x NVMe (two 4 x AnyBay)
This topic provides cable routing information for the 24 x 2.5" NVMe (Gen 5) + 8 x 2.5" NVMe (using two 4 x 2.5" AnyBay backplanes) configuration with three retimer cards.
Connections between connectors: 1 ↔ 1, 2 ↔ 2, 3 ↔ 3, ... n ↔ n
Front backplane cable routing
Figure 1. NVMe cable routing to onboard connectors and one retimer card
| From | To |
|---|---|
| 1 Backplane 1: NVMe 0-1 | Onboard: PCIe 10 |
| 2 Backplane 1: NVMe 2-3 | Onboard: PCIe 9 |
| 3 Backplane 1: NVMe 4-5 | Onboard: PCIe 8 |
| 4 Backplane 1: NVMe 6-7 | Onboard: PCIe 7 |
| 5 Backplane 2: NVMe 0-1 | Onboard: PCIe 6 |
| 6 Backplane 2: NVMe 2-3 | Onboard: PCIe 5 |
| 7 Backplane 2: NVMe 4-5, 6-7 | Onboard: PCIe 3, 4 |
| 8 Backplane 3: NVMe 0-1 | Onboard: PCIe 2 |
| 9 Backplane 3: NVMe 2-3 | Onboard: PCIe 1 |
| 10 Backplane 3: NVMe 4-5 | Retimer: C0 |
| 11 Backplane 3: NVMe 6-7 | Retimer: C1 |
Middle backplane cable routing
Figure 2. Middle backplane cable routing
| From | To |
|---|---|
| 1 Backplane 5: NVMe 0-1 | Retimer: C1 |
| 2 Backplane 5: NVMe 2-3 | Retimer: C0 |
| 3 Backplane 6: NVMe 0-1 | Retimer: C1 |
| 4 Backplane 6: NVMe 2-3 | Retimer: C0 |
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