Redundant Cpu Control - Panasonic WJ-MPU955A User Manual

Redundant CPU Control

When a System Unit includes both a Main CPU and a Backup CPU, it is called a
Redundant System Unit. In this case, one of the CPUs will be running in the Active
mode and will actually be controlling the system operation. The other CPU will be
running in Standby mode and will be following all the system activity in order to take
over system operation, in case the Active CPU fails or otherwise can no longer operate.
Admin Console allows an administrator to find the status of both CPUs and display the
results via the software "lights" on the CPU Unit screen, to the right of the Unit IPA
fields on the Unit tab. The Administrator can also set and switch the status of the CPUs.
The colors of the "lights" have the following meaning:
• White means the status is unknown
• Green means the CPU is in Active mode
• Yellow means the CPU is in Standby mode
• Red means there was an error setting or retrieving CPU Status
This feature is only available when Redundant box is checked in the CPU Units screen,
and an IP Address has been entered for both the Main CPU and the Backup CPU.
Configuration
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