Perle Systems RIO 5500036-17 - Manual (Page 30)

RIO Remote I/O System User Guide
Example RIO systems
Page 30
Chapter 1 Introduction
Dual host fail-safe link
The RIO system supports the connection of a stand-by host in case of server crashes. A
typical example is shown in the next picture. In this system a second stand-by host has been
added which is installed in a separate server, thus if one host fails, system operation is still
maintained. Note that a fault tolerant link is often added between RTAs for additional
protection of the system.
For information on how to install a dual host fail-safe system, see Before you start on
page 33 and Installing a fault tolerant link on page 189 in Chapter 2 Installing hardware
and software .
RIO Host card
on server 1
Stand-by RIO Host
card on server 2
Fault tolerant link
Multiple RTAs to
maintain operation
in event of RTA
failure
Peripheral
For example,
printer