ESXi is very demanding of hardware. That message usually indicates an unsupported RAID controller.
There is a subtext entry in the HCL that suggests you might need a specific patch. Check the HCL
1. This server uses a processor series that requires a 4.0 U1 patch (Release Name - ESX400-201002001, Bulletin ID ESX400-201002401-BG / Release Name ESXi400-201002001, Bulletin ID ESXi400-201002401-BG) or newer for full support.