As code65536 said, probably your controller has troubles with ALL your drives, or maybe the presence of optical drives interferes also with your hard disks. Did you try an update of your Promise controller's driver?
An interesting check could be to disconnect your optical drives leaving the hard disks connected as the currently are, and see if you experience the problems again...
Originally posted by code65536
And in your case, it sounds like your controller has issues with all your drives.