It's even easier to do if you have a USB floppy. Most of the ServeRAID 9 drivers also have a diskette "image" which can be "written" to a 1.44 MB floppy disk, with the "included" tools. Once this diskette is created, SCO 6 should be able to locate the USB floppy drive and load the "revised" HBA driver (aacraid usually.)

Only one problem is that is you are using USB keybaords / mice, these may not work when the USB floppy drive is connected. It seems that IBM may not have provided enough power over the USB ports for all "4 ports."