The "12G SAS Bridge Board" supports RAID 0,1 and 10 but the "12G SAS/PCIe* SFF Combo Bridge Board" doesn't. The "12G SAS/PCIe* SFF Combo Bridge Board" is the default card and the "12G SAS Bridge Board" is optional for some types, but not for the HNS2600TP24SR. So I think it isn't possible.
Correct me if I'm wrong...
This message was posted on behalf of Intel Corporation
First, I would like to apologize for the miscommunication, after further review, the Spare 12Gb/s SAS/PCIe* SFF combo bridge board for Intel® Compute
Module HNS2600TP24R doe does not have RAID support. Only supported in dual processor configuration. You can check this information on page 28 here.