Disclaimer: my 1210SA is not in a RAID configuration, so this information may not be helpful or apply.
I don't know if you ever got an answer on this, but after installing the drive and the drivers, the drive should be /dev/sda (Scsi Disk A). You can mount this drive, assuming you had a formatted partition on it, like this:
mount -t ext3 /dev/sda1 /new_mount_point
Use fdisk and mkfs to partition and format the drive. Another alternative is to re-install on the drives. Adaptec now has RH9 drivers, which is a better version than RH8 for desktop use.