Installer does not recognize LSI SAS 1068E Raid setting

[Davut Topcan]

Hi all,

We are trying to install Free BSD on a Supermicro server X7DVL-3 with LSI
SAS 1068E SCSI Host adapter.
We set up a raid1 with 2 73GB HDs.  We then run FreeBSD installation from
CDs.
When we are asked to partition the drive we are presented with two physical
drives (instead of the logical raid drive).

Any suggestion how we can see the logical drive?

Thanks in advance.

Davut