IBM TotalStorage 200 Service Manual page 114

Advanced Setup
98
Models 200 and 225 Service Guide
You also can select which PCI SCSI adapter is given boot precedence. The
first drive that is attached to the selected adapter will be assigned drive
number 80L and the operating system will start from that drive. The default
for boot precedence is Disabled. The range of choices depends upon the
number of PCI SCSI adapters installed in the appliance.
You can enable a virus-detection test that checks for changes in the master
boot record at startup. You also can choose to run POST in the enhanced
mode or the quick mode.
Select this to change values for advanced hardware features, such as
cache control, and PCI configuration. This selection appears only on the full
Configuration/Setup Utility main menu.
A warning message appears above the selections on this menu to alert you
that the system might malfunction if these options are configured incorrectly.
Follow the instructions on the screen carefully.
v Processor Serial Number Access
Select this to identify if the microprocessor serial number in the
microprocessor is readable.
v Core Chipset Control
Select this to modify settings that control features of the core chip set on
the system board.
v Cache Control
Select this to enable or disable the microprocessor cache. In addition,
you can define the microprocessor cache type as write-back (WB) or
write-through (WT). Selecting write-back mode will provide the maximum
system performance.
v PCI Slot/Device Information
Select this to view and identify system resources used by PCI devices.
PCI devices automatically communicate with the appliance configuration
information. This usually results in automatic configuration of a PCI
device.
Attention: You must use the menu selections to save custom settings
for the PCI Slot/Device Information choice. The save, restore and load
default settings on the main menu of the Configuration/Setup Utility do
not save the PCI Slot/Device Information settings.
After making changes, select:
– Save and exit the PCI Utility to save the changes and return to the
Advanced Setup choice.
– Exit the PCI Utility without saving changes to ignore the changes,
restore the previous settings, and return to the Advanced Setup menu.
PCI Device Control allows you to enable or disable the integrated SCSI,
video, and Ethernet controllers. You can also enable or disable PCI slots
from this menu.
– The default setting is Enable for all the controllers and PCI slots. If
you select Disable, the system will not configure the disabled device
and the operating system will not see the device. (This is equivalent
to unplugging the device.)
– If the on-board SCSI controller is disabled and no other controller and
mass storage device are installed, operating system startup cannot
occur.