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12 x 3.5" SAS/SATA + 2 x 3.5" SAS/SATA

This topic provides cable routing information for the front 12 x 3.5-inch SAS/SATA expander backplane with a 2 x 3.5-inch SAS/SATA rear backplane.

8i adapter

Connections between connectors: 11, 22, 33, ... nn

Figure 1. Front/Rear backplane signal cable routing
Front/Rear backplane signal cable routing

Figure 2. Rear backplane power cable routing
Rear backplane cable routing when two processors installed

FromToFromTo
1 Backplane 1: SAS 11 Backplane 4: SAS1 Backplane 4: PWR
  • Onboard: rear backplane power

  • Onboard: rear backplane sideband

  • Riser 1: PWR

2 Backplane 1: SAS 02 8i adapter
  • Gen 4: C0

  • Gen 3: C0C1