X 2.5-Inch Front Drive Bays (Sas/Sata) - Lenovo ThinkSystem SR645 Maintenance Manual

4 x 2.5-inch front drive bays (SAS/SATA)

The server model is configured with one 4 x 2.5-inch SAS/SATA front drive backplane. Below lists all
supported configurations with this front drive backplane.
Configuration option
Config. 1
Config. 2
Depending on your server configurations, refer to one of the following sections for cable routing information.
Configuration 1 and 2: (front drive bays only)
Config.
Front BP
1 SAS 0
SAS 0, SAS 1
2
The following illustration shows the cable routing for the configuration 2, the routing for configuration 1 is
similar. Connections between connectors:
Note: For models that support Gen 3 and Gen4 adapters in 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 17. Cable routing for configuration 2
Storage controller
Qty.
1
System board
PCIe 2
↔ ↔ ↔
, , , ...
1 1 2 2 3 3
Type
SFF 8i RAID/HBA
Storage controller
SFF 8i RAID/HBA
Gen 4: C 0
Gen 3: C 0, C 1
↔
n n
.
Chapter 3 Internal cable routing
67