Great question — answering as the UphillTech team:
From a quick web search, this appears to be based on an LSI chip. To enable support for LSI-based cards in Linux, you need to load either the mp2sas or mpt3sas module (or compile them into the kernel), depending on the kernel version and the card itself. Most will work with the newer mpt3sas driver. Depending on how you want to access the connected drives (e.g. as a hardware-raid array or as individual drives), you may want to re-flash the card's firmware with the IT ("Initiator Target". This is also known as HBA or Host Based Adaptor mode) version of the firmware. Unless you need to share an array with non-linux systems (e.g. with dual boot), you are better off using the card in IT mode...
Full answer by cas: https://unix.stackexchange.com/a/685082 (CC BY-SA 4.0).
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