Specifications

C-22
Cisco UCS C240 Server Installation and Service Guide
OL-25761-01
Appendix C RAID Controller Considerations
RAID Controller Cabling
PCIe-Style Card
This option can control up to 24 drives.
The required UCSC-CABLE6 cable kit has two cables. Cable 1 controls drives 1–12 and cable 2 controls
drives 13–24.
1. Connect cable 1 from connector SAS1 on the card to the SAS1 connector on the expander.
2. Connect cable 2 from connector SAS2 on the card to the SAS2 connector on the expander.
SFF 16-Drive Backplane, No Expander
The SFF 16-drive option does not use a SAS expander, so connections from the controller are made
directly to the backplane. 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-CABLE2 cable kit has four cables. Cable 1 controls drives 1–4 and cable 2 controls
drives 5–8. (With this embedded RAID option, only two of the four cables in the kit are used.)
1. Connect cable 1 from connector SASPORT 1 on the motherboard to the SAS1 connector on the
backplane.
2. Connect cable 2 from connector SASPORT 2 on the motherboard to the SAS2 connector on the
backplane.
Mezzanine-Style Card
This option can control up to 8 drives.
The required UCSC-CABLE2 cable kit has four cables. Cable 1 controls drives 1–4 and cable 2 controls
drives 5–8.
1. Connect cable 1 from the card connector SAS1 to the SAS1 connector on the backplane.
2. Connect cable 2 from the card connector SAS2 to the SAS2 connector on the backplane.
PCIe-Style Card
This option can control up to 8 drives with one controller; you can control up to 16 drives with two
identical PCIe-style controllers and the four cables that are included in the UCSC-CABLE2 kit.
The required UCSC-CABLE2 cable kit has four cables.
• Cable 1 controls drives 1–4 and cable 2 controls drives 5–8.
• With a second PCIe-style controller in the server, cable 3 controls drives 9–12 and cable 4 controls
drives 13–16.
Make the following connections to your first controller card to control up to eight drives:
1. Connect cable 1 from the first card SAS1 connector to the SAS1 connector on the backplane.
2. Connect cable 2 from the first card SAS2 connector to the SAS2 connector on the backplane.
Make the following connections to your second controller card to control 9 to 16 drives:
1. Connect cable 1 from the second card SAS1 connector to the SAS3 connector on the backplane.
2. Connect cable 2 from the second card SAS2 connector to the SAS4 connector on the backplane.