Lenovo ThinkSystem SR650 V2 - Page 118

Middle and rear backplanes: 8 x 2.5-inch SAS/SATA + 8 x 2.5-inch SAS/SATA
To connect the front backplanes, refer to “Front backplanes: 24 x 2.5-inch SAS/SATA” on page 105.
The following shows the cable connections for two 4 x 2.5-inch SAS/SATA middle backplanes and one 8 x
2.5-inch SAS/SATA rear backplane if installed.
From To
Backplane 4: SAS 0 CFF 16i RAID/HBA adapter: C2
Backplane 4: SAS 1 CFF 16i RAID/HBA adapter: C3
Backplane 5: SAS
CFF expander: C3
Backplane 6: SAS
Backplane 4: PWR
Riser 1: PWR1, PWR2
Backplane 5: PWR
Riser 2: PWR1, PWR2
Backplane 6: PWR
Connections between connectors:
1 ↔ 1 , 2 ↔ 2 , 3 ↔ 3 , ... n ↔ n
Figure 52. Cable routing for middle 4 x 2.5 SAS/SATA backplanes and rear 8 x 2.5 SAS/SATA backplane
108 ThinkSystem SR650 V2Maintenance Manual