Lenovo ThinkSystem SR645 Setup Manual page 73

Configuration 3 and 4: (front drive bays and rear drive bays)
Front: one 4 x 3.5-inch SAS/SATA backplane
Rear: one 2 x 2.5-inch SAS/SATA backplane
Config.
3
4
The following illustration shows the cable routing for the configuration 4, the routing for configuration 3 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 19. Cable routing for configuration 4
Front BP Rear BP
SAS
SAS
↔
,
1 1
System board
PCIe 2
SAS PCIe 5
SAS
↔ ↔ ↔
, , ...
2 2 3 3 n n
Storage controller
SFF 8i RAID/HBA
Gen 4: C 0
Gen 3: C 0, C 1
.
Chapter 3 Internal cable routing
69