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Drive backplane cable routing: 3.5-inch chassis

This section provides backplane cable connection information for server models with 3.5-inch front drive bays.

Power cable connections​

Note
  • For connectors on each drive backplane, see Drive backplane connectors.

    • Front backplane (BP1):

      • 12 x 3.5-inch SAS/SATA front backplane (also used as an 8 x 3.5-inch SAS/SATA front backplane when the upper four drive bays are left empty)

      • 12 x 3.5-inch AnyBay front backplane (also used as a 12 x 3.5-inch NVMe front backplane when only NVMe connectors on the backplane are cabled)

    • Middle backplanes (BP10/11):

      • 4 x 2.5-inch AnyBay middle/rear backplane (also used as a 4 x 2.5-inch NVMe middle/rear backplane when only NVMe connectors on the backplane are cabled)

    • Rear backplane (BP9):

      • 4 x 2.5-inch AnyBay middle/rear backplane (also used as a 4 x 2.5-inch NVMe middle/rear backplane when only NVMe connectors on the backplane are cabled)

      • 4 x 3.5-inch SAS/SATA rear backplane

  • The following uses the 4 x 3.5-inch rear backplane as an example of BP9 for illustration. The cable routing for 4 x 2.5-inch rear backplane is similar.

Figure 1. Power cable connections

FromTo (processor board)Length
1 BP1: PWR1 PWR 1

  • SAS/SATA: 250 mm

  • AnyBay: 280 mm

2 BP10: PWR2 PWR 23250 mm
3 BP11: PWR3 PWR 21250 mm
4 BP9: PWR4 PWR 12250 mm

Signal cable connections​

Refer to the specific topic for signal cable connections depending on the backplanes you have installed.