8 x 2.5'' SAS/SATA backplane
Use this section to understand the SAS/SATA backplane cable routing for server model with eight 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 8 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 illustrations and tables show the mapping relationship between backplane connectors and system board assembly connectors for onboard configuration.
Connections between connectors: 1 ↔ 1, 2 ↔ 2, 3 ↔ 3, ... n ↔ n.![Cable routing for onboard configuration of 8 x 2.5 SATA front drives](sr635v3-235-8sataob-450.png)
From | To |
---|---|
1 SAS 0 and SAS1 on the front backplane | 1 PCIe 7 connector on the system board assembly |
Cable routing with an SFF HBA/RAID adapter
The following illustrations and tables show the mapping relationship between backplane connectors and an 8i or 16i SFF HBA/RAID adapter (Gen 3 or Gen 4).
![Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with an 8i or 16i SFF RAID adapter (Gen 4)](sr635v3-236-8gen4sff-450.png)
From | To |
---|---|
1 SAS 0 and SAS 1 on the front backplane | 1 C0 on the SFF HBA/RAID adapter |
![Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with an 8i or 16i SFF RAID adapter (Gen 3)](sr635v3-237-8gen3sff-450.png)
From | To |
---|---|
1 SAS 0 and SAS 1 on the front backplane | 1 C0 and C1 on the SFF HBA/RAID adapter |
Cable routing with a CFF HBA/RAID adapter
For power and input connections of CFF RAID/HBA adapters, refer to CFF RAID/HBA adapter.
![Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with a 16i CFF RAID/HBA adapter (Gen 4)](sr635v3-239-8g4cff16i-450.png)
From | To |
---|---|
1 SAS 0 on the front backplane | 1 C0 on the CFF RAID/HBA adapter |
2 SAS 1 on the front backplane | 2 C1 on the CFF RAID/HBA adapter |
For power and input connections of CFF RAID/HBA adapters, refer to CFF RAID/HBA adapter.
![Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with an 8i CFF RAID/HBA adapter (Gen 3)](sr635v3-240-8g3cff8i-450.png)
From | To |
---|---|
1 SAS 0 on the front backplane | 1 C0 on the CFF RAID/HBA adapter |
2 SAS 1 on the front backplane | 2 C1 on the CFF RAID/HBA adapter |