Lenovo ThinkSystem SR635 V3 User Manual page 280

Figure 200. Cable routing for 6 front SAS/SATA drives and 4 front AnyBay drives bays with a 16i SFF RAID adapter (Gen
4)
Table 41. Mapping between one front AnyBay backplane and an SFF HBA/RAID adapter (Gen 4)
From
SAS 0 and SAS 1 on the front backplane
1
SAS 2 on the front backplane
3
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To
C0 on the SFF HBA/RAID adapter
1
C1 on the SFF HBA/RAID adapter
3