Lenovo ThinkSystem SR650 V2 - 24 X Nvme Front Drive Bays; Bays

24 x NVMe front drive bays
This section provides cable routing information for the server model with 24 x 2.5-inch NVMe front drive
bays.
• “Retimer cards (24 x NVMe)” on page 113
• “Switch cards (32 x NVMe)” on page 114
Retimer cards (24 x NVMe)
The following shows the cable connections for the 24 x 2.5-inch NVMe configuration with three retimer
cards.
From To
Backplane 1: NVMe 0-1, 2-3
Onboard: PCIe 1, PCIe 2
Backplane 1: NVMe 4-5, 6-7
Retimer card on PCIe slot 1: C0, C1
Backplane 2: NVMe 0-1, 2-3
Retimer card on PCIe slot 2: C0, C1
Backplane 2: NVMe 4-5, 6-7
Onboard: PCIe 3, PCIe 4
Backplane 3: NVMe 0-1, 2-3
Onboard: PCIe 5, PCIe 6
Backplane 3: NVMe 4-5, 6-7
Retimer card on PCIe slot 4: C0, C1
Connections between connectors:
1 ↔ 1 , 2 ↔ 2 , 3 ↔ 3 , ... n ↔ n
Figure 56. Cable routing for the 24 x 2.5-inch NVMe configuration with three retimer cards
Chapter 3. Internal cable routing 113