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Installation
66
840 USE 106 00 January 2003
Adding Hot
Standby
Capability to an
Existing System
To add Hot Standby capability to an existing Quantum system, you must install a
second backplane with modules identical to those in the original backplane. Keep
the following requirements in mind:
You must remove any local I/O and distributed I/O networks from the original
backplane, because they will not be supported at switchover.
The diagram below shows that local I/O must be removed.
Converting to
Hot Standby
System
You need backplanes with at least four slots.
The components in both backplanes must meet the version requirements listed.
You must install a splitter and a self-terminating F adapter between the original RIO
head processor and the RIO network. A second cable runs from the splitter to the
Standby RIO head processor, through a second self-terminating F adapter.
In general, you may follow the installation directions in this Chapter. However, as a
precaution, you should first stop the controller and disconnect power to the system.