I set up a 12Gb RAID 5 Array. 4 x 4TB Hitachi 7200RPM Drives
GPT Volume 11.9999 Volume Label BIG12
Recognzed by BIOS, Recognized by RAID Xpert
Was working fine for about 30 days.
Suddenly, today Windows cannot find the volume. Disk Managemnt reports 4 single drives with no volumes on them. Same with RAID Xpert. 4 single drives with No Logical Drives. Yet BIOS Still reports 12Gb Raid (healthy)
The BIOS RAID Version is 3.2.1540.44
Raid Xpert Version is 3.3.1504.19
Motherboard BIOSTAR TA870U3+ with BIOS 8.00.15 (08/24/11)
Now I realize that RAID doesn't garner much support with AMD, but if you are going to offer it, you can not ignore it for support.
(My previous 4Tb nVidia RAID5 has worked flawlessly for years.)