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12 x 3.5" SAS/SATA + 8 x 2.5" NVMe

This topic provides cable routing information for the 12 x 3.5-inch SAS/SATA front backplane with two 4 x 2.5-inch NVMe middle backplanes.

Front backplane: 12 x 3.5" SAS/SATA​

The following shows the cable connections for the 12 x 3.5-inch SAS/SATA front backplane with one 16i RAID/HBA adapter.

FromTo

Backplane 1: SAS 0, SAS 1

16i RAID/HBA adapter on PCIe slot 2:

  • Gen 3: C0C1

  • Gen 4: C0

Backplane 1: SAS 2

  • Gen 3: C2C3

  • Gen 4: C1

Connections between connectors: 1 ↔ 1, 2 ↔ 2, 3 ↔ 3, ... n ↔ n

Figure 1. Cable routing for the 12 x 3.5-inch SAS/SATA front backplane with one 16i RAID/HBA adapter
Cable routing for the 12 x 3.5-inch SAS/SATA front backplane with one 16i RAID/HBA adapter

Middle backplanes: 8 x 2.5" NVMe​

The following shows the cable connections for the two 4 x 2.5-inch NVMe drive backplanes with onboard connectors.

FromTo

Backplane 5: NVMe 0-1, 2-3

Onboard: PCIe 1, PCIe 2

Backplane 6: NVMe 0-1, 2-3

Onboard: PCIe 3, PCIe 4

Backplane 5: PWR

Riser 2: PWR1, PWR2

Backplane 6: PWR

Connections between connectors: 1 ↔ 1, 2 ↔ 2, 3 ↔ 3, ... n ↔ n

Figure 2. Cable routing for the two 4 x 2.5-inch NVMe middle drive backplanes
Cable routing for the two 4 x 2.5-inch NVMe middle drive backplanes