8 x 2.5'' SAS/SATA backplane (one processor)

Use this section to understand the SAS/SATA backplane cable routing for server model with eight 2.5'' front drives.

To connect cables for a 7mm drive backplane, refer to 7mm drive backplane.

To connect power cables for a backplane for standard 2.5'' or 3.5'' drives, refer to Cable routing for backplane power.

To connect cables for M.2 drives, refer to M.2 drive backplane.

To connect intrusion switch cable, refer to Intrusion switch.

To connect power cable for CFF RAID adapter, refer to CFF RAID adapter.

To connect signal cables for a backplane for standard 8 x 2.5'' front drives, refer to the following cable routing scenarios depending on your server configuration:

• Cable routing for onboard configuration

• Cable routing with an SFF HBA/RAID adapter

• Cable routing with a CFF RAID adapter

Cable routing for onboard configuration

The following illustrations and tables show the mapping relationship between backplane connectors and system board connectors for onboard configuration.

The following figure illustrates the cable routing for the onboard configuration of 8 x 2.5'' front SAS/SATA drive bays. Connections between connectors: 1 ↔ 1, 2 ↔ 2, 3 ↔ 3, ... n ↔ n.

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

Table 1. Cable routing for onboard configuration of 8 x 2.5 SAS/SATA front drives

Backplane	From	To
Front BP (SAS)	1 SAS 0, SAS 1	1 PCIe connector 7

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'' front SAS/SATA drive bays with an 8i or 16i SFF RAID adapter (Gen 3 or Gen 4)

Table 2. Mapping between one front SAS/SATA backplane and an SFF HBA/RAID adapter

Backplane	From	To
Front BP (SAS)	1 SAS 0, SAS 1	1 Gen 3: C0, C1 Gen 4: C0

Cable routing with a CFF RAID adapter

The following illustration and table show the mapping relationship between backplane connectors and an 8i or 16i CFF RAID adapter (Gen 3 or Gen 4).

Note

The following illustration is for Gen 4 adapters. For Gen 3 adapters, the illustration might be slightly different.

Figure 3. Cable routing for 8 x 2.5'' front SAS/SATA drive bays with an 8i or 16i CFF RAID adapter (Gen 3 or Gen 4)

Table 3. Mapping between one front SAS/SATA backplane and a CFF RAID adapter

Backplane/adapter	From	To
Front BP (SAS)	1 SAS 0	1 C0
	2 SAS 1	2 C1
CFF RAID adapter	3 MB input	3 PCIe connector 7