Figure 195. Cable routing for 8 x 2.5-inch front SAS/SATA drive bays with an 8i or 16i SFF RAID adapter (Gen 3)
Table 36.  Mapping between one 8 x 2.5-inch front SAS/SATA backplane and an SFF HBA/RAID adapter
From To
1  SAS 0 and SAS 1 on the front backplane 1  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” on page 
222
.
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ThinkSystem SR635 V3 User Guide