Lenovo ThinkSystem SR645 Setup Manual page 74

Front: one 4 x 3.5-inch SAS/SATA backplane
Rear: one 2 x 2.5-inch NVMe backplane
Con-
Front BP
fig.
SAS
5
SAS
6
The following illustration shows the cable routing for the configuration 5, the routing for configuration 6 is
similar. Connections between connectors:
Note: For models that support Gen 3 and Gen4 adapters at the same slot, the illustration shows only the
cable routing information for Gen 4 adapters, the routing and connector information is similar for Gen 3
adapters.
Figure 20. Cable routing for configuration 5
ThinkSystem SR645 Setup Guide
70
Rear BP
NVMe 0, NVMe 1
NVMe 0, NVMe 1
↔ ↔
,
1 1 2
System board
PCIe 2
PCIe 6
PCIe 6
↔ ↔
, , ...
2 3 3 n n
Storage controller
SFF 8i RAID/HBA
Gen 4: C 0
Gen 3: C 0, C 1