*I am not booting from raid*
I am using a PCI controller and have setup a raid1 in the cards bios. Both disks show up seperatly in the disk utility. I can mount the source disk but get an error mounting the mirror disk. dmraid shows the mirror. My question is by writing to the source disk will the mirror disk automatically (by pci controller) be mirrored? I have nothing listed under /dev/mapper, it seems for this to work right i would need to map the "raid disk" vs the physical disk. Since i cannot mount the mirror drive is there any way to verify that the data is duplicating without removing the drives?