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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.

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.
Figure 1. Cable routing for onboard configuration of 8 x 2.5 SATA front drives
Cable routing for onboard configuration of 8 x 2.5 SATA front drives

Table 1. Mapping between one front 8 x 2.5-inch SATA backplane and the system board assembly for onboard configuration
FromTo
1 SAS 0 and SAS1 on the front backplane1 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).

Figure 2. Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with an 8i or 16i SFF RAID adapter (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)

Table 2. Mapping between one 8 x 2.5-inch front SAS/SATA backplane and an SFF HBA/RAID adapter
FromTo
1 SAS 0 and SAS 1 on the front backplane1 C0 on the SFF HBA/RAID adapter
Figure 3. Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with an 8i or 16i SFF RAID adapter (Gen 3)
Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with an 8i or 16i SFF RAID adapter (Gen 3)

Table 3. Mapping between one 8 x 2.5-inch front SAS/SATA backplane and an SFF HBA/RAID adapter
FromTo
1 SAS 0 and SAS 1 on the front backplane1 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.

Figure 4. Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with a 16i CFF RAID/HBA adapter (Gen 4)
Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with a 16i CFF RAID/HBA adapter (Gen 4)

Table 4. Mapping between one 8 x 2.5-inch front SAS/SATA backplane and a 16i CFF RAID/HBA adapter
FromTo
1 SAS 0 on the front backplane1 C0 on the CFF RAID/HBA adapter
2 SAS 1 on the front backplane2 C1 on the CFF RAID/HBA adapter

For power and input connections of CFF RAID/HBA adapters, refer to CFF RAID/HBA adapter.

Figure 5. Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with an 8i CFF RAID/HBA adapter (Gen 3)
Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with an 8i CFF RAID/HBA adapter (Gen 3)

Table 5. Mapping between one 8 x 2.5-inch front SAS/SATA backplane and an 8i CFF RAID/HBA adapter
FromTo
1 SAS 0 on the front backplane1 C0 on the CFF RAID/HBA adapter
2 SAS 1 on the front backplane2 C1 on the CFF RAID/HBA adapter