How to install the Ubuntu set up would be raided Linux servers

I installed Windows to my 3TB hard drives first to see if all the hardware works okay. And I want it to set in RAID5 and load the Ubuntu server. With the exception of the Ethernet card. And after that the RAID was not recognized to Ubuntu because it is a valid disk. Can you give me some suggestions on how to install the Ubuntu set up would be raided Linux servers and to be installed easily without any hesitations?
And I want some servers with a trimming to access. So that I could done and install this well.
