Not really but I worked around the problem by deactivating the BIOS installation on the Adaptec card (or BIOS something). With this configuration you cannot boot on your HDDs connected to your Adaptec Card. So as my initial requirement was to have a HA server with RAID capabilities, I added an SSD HDD to my server and connect it to the motherboard to boot on. I use two HDDs configured as RAID 1 connected to my Adaptec. The OS is installed on my SSD card and Data are on the RAID 1 storage space. It's a really stupid problem ! You can buy a Server made in China for half price but really compatible with all hardware in the world ! I suspect Dell to have this problem unresolved to oblige people to buy a RAID Card from them at 800 € !!! Thanks a lot Mr Dell !!! But never ever Dell and I will never recommend a Dell server! 
Hi After having installed an Adaptec 2045 RAID card in my T320, it refuses to continue to boot. the problem persists even if I deactivate completely LCC... I need machine running urgently. Please help me. Regards
T320 stucks at initializing firmware interfaces