User guide

Installing the Operating System Drivers 7-15
3. If you do not want to boot from a drive on this controller, for instance if
you wanted to boot from a drive attached to the integrated SCSI
controller, you must manually change the CONFIG.SYS file before you
reboot the server. Edit the CONFIG.SYS file to reorder the
BASEDEV=CPQARRAY.ADD statement so that it appears after the
BASEDEV statement.
4. If it is present, remove the BASEDEV=IBM1S506.ADD statement
from the CONFIG.SYS file. This driver conflicts with the
CPQARRAY.ADD driver if both are loaded.
5. Save the updated CONFIG.SYS file and exit the editor.
6. Perform a normal system shutdown and reboot the server to load the
new driver.
Controller Ordering
There are two factors that determine controller ordering under IBM OS/2:
1. The order in which the ADD driver appears in the CONFIG.SYS file
determines how each type of controller is ordered relative to other types
of controllers.
Each type of controller that a single ADD driver controls is grouped
together. The first ADD driver to appear in the CONFIG.SYS file has
its controllers ordered first, the second ADD driver has its controllers
ordered after the first driver controller, and so on.
The slot in which the controller is installed does not affect the loading
order; only the order shown in CONFIG.SYS affects the order.
2. Each ADD driver developed by Compaq orders its controllers in
ascending order based on the controller order assigned by the Compaq
System Configuration Utility.
The following rules must be followed for the driver to function properly with
other storage controllers configured in the system.
NOTE: These rules are NOT automatically enforced by the Compaq System
Configuration Utility. Follow them carefully when configuring the system.
1. All Compaq array controllers should be in consecutive order as a
group. If booting from a Compaq Smart Array 431 Controller, the
CPQARRAY.ADD must be present and the IBM1S506.ADD driver must
not be present in CONFIG.SYS.