4 x 2.5'' SAS/SATA backplane
Use this section to understand the SAS/SATA backplane cable routing for server model with four 2.5-inch front drives.
- For the locations of connectors on the processor board, refer to System-board-assembly connectors.
- To connect power cables for 2.5-inch drive backplanes, refer to Power/Sideband cable routing.
- To connect power and input cables for CFF RAID/HBA adapters, refer to CFF RAID/HBA adapter.
- To connect power and sideband cables for the rear drive backplane, refer to Rear NVMe/SATA drive backplane.
- To connect power and sideband cables for the 7mm drive backplane, refer to 7mm drive backplane.
- To connect cables for RAID flash power modules, refer to RAID flash power modules.
To connect signal cables for 4 x 2.5-inch SAS/SATA configuration, refer to the following cable routing scenarios depending on your server configuration:
Cable routing for onboard configuration
The following figure illustrates the cable routing for the onboard configuration of 4 x 2.5-inch front SAS/SATA drive bays.Connections between connectors: 1 ↔ 1, 2 ↔ 2, 3 ↔ 3, ... n ↔ n.
| From | To |
|---|---|
| 1 SAS on the front backplane | 1 PCIe connector 8 on the system board assembly |
Cable routing with an SFF HBA/RAID adapter
The following figure shows the mapping relationship between backplane connectors and system board assembly/adapter connectors when an 8i SFF HBA/RAID adapter (Gen 3 or Gen 4) is installed.
Gen 3 and Gen 4 SFF RAID/HBA adapters are slightly different in their connectors, but the connection method is similar. The following illustration takes Gen 4 SFF RAID/HBA adapters as an example.
| From | To |
|---|---|
| 1 SAS on the front backplane | 1 C0 on the SFF HBA/RAID adapter |