[opensuse] S-ATA hardware RAID controller

Hello, can someone recommend a real hardware RAID S-ATA Controller compatible with Linux (openSUSE 10.3). I need a RAID 10 array (therefore I got 4 S-ATA II HDD each 500GB). I use a Silicon Image 3124 Controller, and have got a hardware RAID controller / port multiplier (SiI4726), which was pronounced to be compatible with Linux. But there's only a proprietary support for some distributions and kernels (i.e. some SLES Kernel). So it's working as port multiplier but, raid is not configurable with Linux. Using of linux software raid (dmraid) is not possible - it causes too heavy cpu load. Thanks for your help, Paul Neuwirth -- "His great aim was to escape from civilization, and, as soon as he had money, he went to Southern California."