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Cisco UCS C24 Server Installation and Service Guide
OL-26647-01
Appendix C RAID Controller Considerations
Embedded MegaRAID Controller
Installing a Software RAID Key Module for Embedded RAID 5 Support
The software RAID key module contains a chip on a small circuit board. This module attaches to a
motherboard header. This chip upgrades SAS support to add RAID 5 support (RAID 0, 1, 5, and 10 for
up to eight drives). See
Figure C-1.
Note You must have the RAID SCU upgrade ROM installed and before you can use the RAID 5 key.
To install a RAID 5 software key module, follow these steps:
Step 1 Locate the RAID_KEY header (see Figure C-1).
Step 2 Align the connector on the RAID key module with the pins on the header, then gently push the connector
onto the pins.
Step 3 Replace the top cover.
Step 4 Replace the server in the rack, replace cables, and then power on the server by pressing the Power button.
Enabling the Integrated RAID Controller in the BIOS
This controller must be enabled in the server BIOS to use it.
Step 1 Boot the server and press F2 when prompted to enter the BIOS Setup utility.
Step 2 Select the Advanced tab, then South Bridge.
Step 3 Set Onboard SATA Controller to Enabled.
Step 4 Select the SATA Mode.
Step 5 Press F10 to save your changes and exit the utility.
Disabling the Integrated RAID Controller in the BIOS
If you change from using this integrated controller to a RAID controller card, you must disable the
integrated controller in the server BIOS.
Step 1 Boot the server and press F2 when prompted to enter the BIOS Setup utility.
Step 2 Select the Advanced tab, then South Bridge.
Step 3 Set Onboard SATA Controller to Disabled.
Step 4 Press F10 to save your changes and exit the utility.