FreeBSD 9.0 & LSI MegaRAID SATA problem

[Bosko Radivojevic]

Hi all!

I have a problem installing FreeBSD 9.0 on Fujitsu Primergy RX200 S5
server with LSI MegaRAID SATA controller (two SATA HDDs in RAID1
array). When booted from a CD, FreeBSD doesn't recognize RAID Array,
it recognizes HDDs only (ad4 & ad6). On the same server, FreeBSD 8.3
installation recognizes RAID Array (ar0).

pciconf -vl on FreeBSD 9.0:
ahci0 at pci0:0:31:2:     class=0x010400 card=0x11501734 chip=0x3a258086
rev=0x00 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801JIR (ICH10R) SATA RAID Controller'
    class      = mass storage
    subclass = RAID

pciconf -vl on FreeBSD 8.3:
atapci0 at pci0:0:31:2:    class=0x010400 card=0x11501734 chip=0x3a258086
rev=0x00 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'SATA RAID Controller'
    class      = mass storage
    subclass   = RAID

dmesg output on FreeBSD 8.3:
# dmesg|grep ar0
ar0: writing of DDF metadata is NOT supported yet
ar0: 952720MB <DDF RAID1> status: READY
ar0: disk0 READY (master) using ad4 at ata2-master
ar0: disk1 READY (mirror) using ad6 at ata3-master

As far as I understand (while I don't have that much FreeBSD
experience), amr is the appropriate driver for this controller. Tried
to load it manually (kldload /boot/kernel/amr.ko) but it seems the
driver is already present in kernel.

What am I missing here?

Thanks!