Digital Equipment DIGITAL Server 7100 1200, Service Maintenance Manual, Page: 24 / 162

Server Software and Utilities
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When to Run the SCU
Always run the SCU each time you add, remove, or relocate ISA, PCI and/or EISA
expansion boards to reconfigure server resources (IRQs). You should also run the
SCU if the main logic board changed, after adding a processor module, or after
adding memory modules.
If the main logic board changes or a processor module is added, run the SCU (select
the option “Configure Computer”) to update the serial numbers of the components.
For more information on how to change the serial numbers, refer to Chapter 4,
“Obtaining Information About The Server.”
Typically, the server displays a message such as
Run SCU Utility.....Press
F1 to Continue
. Select how you want to access and run the SCU by following
the instructions displayed on the SCU screens.
Configuring Expansion Boards
Each time you add, remove, or relocate any EISA/ISA/PCI expansion board, you
need to run the SCU to identify their operating characteristics, server resource
requirements, and slot locations. Based on this information, the SCU will then
automatically assign the proper server resources to EISA expansion boards, enable
PCI boards, and inform you as to what jumper or switch settings need to be manually
set on ISA expansion boards to avoid resource conflicts.
The SCU identifies an expansion board’s operating characteristics and resource
requirements through Configuration (.CFG) files. These files contain main logic
board, EISA, PCI, and ISA expansion board vital characteristics and the server
resources they require for proper operation. Before you can configure the server,
you must copy the CFG files (and overlays if applicable) supplied with the additional
EISA expansion boards you installed to either the SCU directory on your hard disk
drive or the SCU diskette that you created earlier.
As an added feature, the SCU creates and stores all setup changes in a System
Configuration (.SCI) file. This file is automatically generated when you run the SCU.
Afterwards, this SCI file can be used on any DIGITAL Server that is identically
configured and can serve as a backup to the EISA configuration stored in NVRAM
memory.