8 x SAS/SATA and 16 x NVMe front drive bays
This section provides cable routing information for the server model with 8 x SAS/SATA and 16 x NVMe front
drive bays.
8i/16i RAID/HBA adapter + retimer card
The following shows the 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.
From To
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
Note: *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:
1 ↔ 1 , 2 ↔ 2 , 3 ↔ 3 , ... n ↔ n
Figure 74. SAS/SATA cable routing
Figure 75. NVMe cable routing
Chapter 3. Internal cable routing 125
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