>If it was me (and it isn't), I probably would have set up the 3 disks in a RAID5 array. That way, you can lose one disk and the system still hums along until you can replace the failed disk. That was considered at the time but we found that any combination of mirroring using the motherboard-based controller and the plugged in one wasn't stable (unbootable or soon locked-up) - the only way we could get mirroring to work was if both drives were on the 8212-based controller. Time and budget were against us at the time we were building the original system, but later work with CentOS4 and that controller on other systems was much more successful.