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One 8 x SAS/SATA and two 8 x NVMe backplanes

This section provides cable routing information for the server model with one 8 x SAS/SATA front drive backplane and two 8 x NVMe front drive backplanes.

8i/16i RAID/HBA adapter + retimer card

The following shows the signal cable connections for the 8 x 2.5-inch SAS/SATA + 16 x 2.5-inch NVMe configuration with one 8i/16i RAID/HBA adapter and one retimer card.

To connect power cables for the front backplane(s), refer to Backplanes: server models with 2.5-inch drive backplanes.


Backplane 1: SAS

8i/16i* RAID/HBA adapter on PCIe slot 5:

  • Gen 3: C0C1

  • Gen 4: C0

Backplane 2: NVMe 0-1, 2-3

Onboard: PCIe 1, PCIe 2

Backplane 2: NVMe 4-5, 6-7

Retimer card on PCIe slot 1: C0, C1

Backplane 3: NVMe 0-1, 2-3

Onboard: PCIe 3, PCIe 4

Backplane 3: NVMe 4-5, 6-7

Onboard: PCIe 5, PCIe 6


*If a 16i RAID adapter is used, SAS cable 1 has an extra dummy connector (not shown in below illustration) to connect to the other connector of the 16i RAID adapter.

Connections between connectors: 11, 22, 33, ... nn

Figure 1. SAS/SATA cable routing
SAS/SATA cable routing
Figure 2. NVMe cable routing
NVMe cable routing