IBM TotalStorage 300 Service Manual page 124

v Advanced Setup
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IBM NAS 300 Service Guide
Select this choice to change values for advanced hardware features, such as
cache control, and PCI configuration. This choice appears only on the full
Configuration/Setup Utility main menu.
A warning message appears above the choices on this menu to alert you that the
system might malfunction if these options are configured incorrectly. Follow the
instructions on the screen carefully.
– Processor Serial Number Access
Select this choice to identify if the microprocessor serial number in the
microprocessor is readable.
– Core Chipset Control
Select this choice to modify settings that control features of the core chip set
on the system board.
Attention: Do not make changes here unless directed to do so by an IBM
authorized service representative.
– Cache Control
Select this choice 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.
– PCI Slot/Device Information
Select this choice to view and identify system resources used by PCI devices.
PCI devices automatically communicate with the appliance engine
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 choices 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 choice.
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.
- If the video controller is disabled and no video adapter is installed, the
server will have no video capability. However, turning the appliance engine
off and on three times results in a default startup that enables video again.
– Memory Settings
Select this choice to manually disable or enable a bank of memory.
If a memory error is detected during POST or memory configuration, the
server can automatically disable the failing memory bank and continue