Lenovo ThinkSystem SR650 V2 - Page 114

Middle and rear backplanes: 8 x 2.5-inch SAS/SATA + 4 x 2.5-inch SAS/SATA
To connect the front backplanes, refer to “Front backplanes: 24 x 2.5-inch SAS/SATA” on page 102.
The following shows the cable connections for the two 4 x 2.5-inch SAS/SATA middle backplanes and one 4
x 2.5-inch SAS/SATA rear backplane if installed.
From To
Backplane 4: SAS
CFF expander: C3
Backplane 5: SAS
Backplane 6: SAS CFF expander: C4
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 48. Cable routing for the two 4 x 2.5-inch SAS/SATA middle backplanes and one 4 x 2.5-inch SAS/SATA rear
backplane
104 ThinkSystem SR650 V2Maintenance Manual