Need help please, answer me something, what's wrong or it's a bug ??

Hi all,

Under Freebsd-5.2.1-p11 - Motherboad MSI 694D Pro - Bi-proc PII 733Mhz.

I really need some explanation about acard ATP865R UDMA133 controller RAID IDE.
I would like to use it in RAID1 mode.
My mirror in BIOS mode is OK. (Mirror = RAID1). That's correct ?

I have created array ar0 with 2 HDD 40G (UDMA 133)

GEOM: create disk ad8 dp=0xc6abe760
ad8: 39205MB <Maxtor 6E040L0> [79656/16/63] at ata4-master UDMA133
GEOM: create disk ad10 dp=0xc6b4ba60
ad10: 39205MB <Maxtor 6E040L0> [79656/16/63] at ata5-master UDMA133

Array ar0 created with atacontrol
# atacontrol create RAID1 ad8 ad10
# /stand/sysinstall - Configure - Fdisk - and choice ar0
Ok I have create one slice. A use all capacity of the disk.
# newfs /dev/ar0s1 --> OK
# mount -t ufs /dev/ar0s1 /usr/local/w3 --> OK
# tar zxvf data.tar.gz (1,1Mo --> 6,6Mo untared)

And after that, chaos.
ad8 : WARNING no status, reselecting device.
ad8 : error issuing command=ca
ad8 : error issuing DMA command
ar0: 39205MB <aTA RAID1 array> [4998/255/63] status: DEGRADED subdisks:

And last but not least : kernel trap 12

Somebody can help me, what's happen ?? How can I solve it.

Regards.