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4 x 2.5'' NVMe backplane

Use this section to understand the NVMe backplane cable routing for server model with four 2.5-inch front drives and one or two processors.

To connect cables for the front adapter assembly, refer to Front adapter assembly.

The following table shows the mapping relationship between backplane connectors and processor board connectors for onboard configuration.

The following figure illustrates the cable routing for the onboard configuration of 4 x 2.5-inch front NVMe drive bays. Connections between connectors: 1 ↔ 1, 2 ↔ 2, 3 ↔ 3, ... n ↔ n

Cable routing for onboard configuration with one processor​

Figure 1. Cable routing for onboard configuration of 4 x 2.5-inch front NVMe drives

Table 1. Mapping between backplane and processor board for onboard configuration
FromTo
1 NVMe 0–11 PCIe 2
2 Power2 Power connector 2_A
3 NVMe 2–33 PCIe 1

Cable routing for onboard configuration with two processors​

Figure 2. Cable routing for onboard configuration of 4 x 2.5-inch front NVMe drives

Table 2. Mapping between backplane and processor board for onboard configuration
FromTo
1 NVMe 0–11 PCIe 7
2 Power2 Power connector 2_A
3 NVMe 2–33 PCIe 8