C-20
Cisco UCS C220 Server Installation and Service Guide
OL-25760-01
Appendix C RAID Controller Considerations
RAID Controller Cabling
Cisco UCS C220 Server Cabling
This section contains the following topics:
• Backplane and Expander Options, page C-20
• SFF 8-Drive Backplane Cabling, page C-20
• LFF 4-Drive Backplane Cabling, page C-22
Backplane and Expander Options
The server is orderable in two different versions, each with one of two different front panel/backplane
configurations:
• Cisco UCS C220 (small form-factor (SFF) drives, with 8-drive backplane.
Holds up to eight 2.5-inch hard drives or solid state drives.
• Cisco UCS C220 (large form factor (LFF) drives, with 4-drive backplane).
Holds up to four 3.5-inch hard drives.
SFF 8-Drive Backplane Cabling
The cable connections required for each type of controller are as follows:
Embedded RAID
This option can control up to eight drives.
The required UCSC-CABLE1 cable kit has two mini-SAS cables. Cable 1 controls drives 1–4 and cable
2
controls drives 5–8.
Step 1 Connect mini-SAS cable 1 from the motherboard connector SAS1 to the drives 1–4 connectors on the
backplane.
Step 2 Connect the cable 1 SGPIO connector labeled, “S1” to backplane connector S1.
Step 3 Connect mini-SAS cable 2 from the motherboard connector SAS2 to the drives 5–8 connectors on the
backplane.
Step 4 Connect the cable 2 SGPIO connector labeled, “S2” to backplane connector S2.
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