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33GFK-0827 Chapter 3 Configuration
If the existing configuration does not require any modification to suit the redundant
CPU configuration, the prompt ”REPLACE displayed module ? (Y/N)” will be displayed
beneath the softkey strip instead of the message box.
If you answer ”Y”, page 1 of the detail screen for the redundant CPU (IC697CPU 780) is
displayed, If you were to answer ”N”, the previous CPU is displayed. For the
redundant CPU configuration example, the answer is ”Y”.
The differences between screen page 1 of the redundant CPU and non-redundant CPU
are described below.
Redundant CPU Requirements
The I/O configuration of a redundant CPU has the following restrictions, which are:
1. In a redundant CPU system, rack I/O module interrupts MUST be disabled.
2. The SBAs of redundant GBCs in a Primary redundant CPU system must be 31; the
SBAs of redundant GBCs in a Secondary redundant CPU system must be 30.