[ubuntu] Raid controller SiliconImage (SIL3124) on 16.04 amd64, Help!!!

Hi to everybody, i hope to find a solution here after have searched over the web unusefully...
I have two hard disk, a single sata where i want to install the system and a four disks Raid where i stored many datas already;
My trouble is that if the raid is coected to the motherboard there is no way to install the distrubution, instead, if it is not coected the Ubuntu recognize everithing well and finish the installation process;
Also i need to access those datas after the installation but ubuntu doesn't want to ear anything, it dosn't see the Raid controller.
The controller incriminated is the one i wrote in the title...
Is there anybody who can help me?

Thank you in advance for any reply,

Max