Dell DSS 2500 Owner's Manual page 133

Figure 70. Cabling between the hard drive backplane RAID controller on dual riser module
1 system board
3 SAS A connector on RAID controller
5 backplane
7 SAS A connectors on backplane
Next steps
1 Reconnect the data cable(s) and power cable to the hard drive backplane
2 Install all SAS/SATA/SSD hard drives into their original locations.
3 Follow the procedure listed in the After working inside your system section.
Related links
Safety instructions
Before working inside your system
Removing a hot swappable hard drive carrier
Installing a hot-swappable hard drive carrier
After working inside your system
2 RAID controller on dual riser module
4 SAS B connector on RAID controller
6 SAS B connectors on backplane
Installing and removing system components 133