Lenovo ThinkSystem SR630 V3 User Manual page 358

Figure 299. Cable routing for 10 front SAS/SATA drives bays with a 16i CFF RAID adapter (Gen 3 or Gen 4)
Table 99. Mapping between one front SAS/SATA backplane and a CFF RAID adapter
Backplane/adapter
Front backplane
CFF RAID adapter
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From
SAS 0
1
SAS 1
2
SAS 2
3
MB input
4
To
C0
1
C1
2
C2
3
PCIe 2
4