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4 x 2.5-inch front drive bays

Use this section to understand the backplane cable routing for server model with four 2.5-inch 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-inch or 3.5-inch drives, refer to 2.5-inch/3.5-inch drive backplane (power).

To connect signal cables for a backplane for standard 4 x 2.5-inch front drives, refer to the following cable routing scenarios depending on your server configuration:

Cable routing for onboard configuration​

The following table shows the mapping relationship between backplane connectors and system board connectors for onboard configuration.

Table 1. Mapping between backplane connectors and system board connectors for onboard configuration
BackplanesFromTo
Front BP (SAS)SASSATA 0

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

Figure 1. Cable routing for onboard configuration of 4 x 2.5-inch front SAS/SATA drive bays Cable routing for onboard configuration of 4 x 2.5-inch front SAS/SATA drive bays

Cable routing with an SFF HBA/RAID adapter​

The following table shows the mapping relationship between backplane connectors and adapter connectors when an 8i SFF HBA/RAID adapter (Gen 3 or Gen 4) is installed.

Table 2. Mapping between backplane connectors and adapter connectors when an SFF HBA/RAID adapter is installed
BackplanesFromTo
Front BP (SAS)SASC0
Note
Gen 3 and Gen 4 SFF HBA/RAID adapters are slightly different in their connectors, but the cable routing method is similar.

The following figure illustrates the cable routing for the configuration of 4 x 2.5-inch front SAS/SATA drive bays with an 8i SFF RAID adapter (Gen 4). Connections between connectors: 1 ↔ 1, 2 ↔ 2, 3 ↔ 3, ... n ↔ n

Figure 2. Cable routing for 4 x 2.5-inch front SAS/SATA drive bays with an 8i SFF RAID adapter (Gen 4) Cable routing for 4 x 2.5-inch front SAS/SATA drive bays with an 8i SFF RAID adapter (Gen 4)