Problem with Dell PowerEdge 1750

I have received a Dell PowerEdge 1750. I want to install RouterOS level 4.
But now is not possible. RouterOS does not detect the disks. Currently the server has 3 scsi disks in Raid5. I visited the hardware section and see some support on Dell PowerEdge. Someone has done it?

the problem is scsi disks, I have a worked well for over 2 years Dell SC1425 with SATA disk