Specifications

15 – Configuring Distributed Server Architecture
336 R400
Overview
The Distributed Server Architecture option enables you to integrate multiple
PlantScape servers into a single operational system, with little engineering effort.
It is effective for geographically distributed systems, for logically separate
PlantScape systems located in different parts of a plant, and for combinations of
the two.
Geographically distributed systems collect data from a wide area and need to be
controlled locally and remotely. Common configurations include a master control
center accessing data from several remote sites, which might each contain several
servers and which can also exchange information. Communication bandwidth of
the network between the servers is typically less than that available within an
individual plant.
In a plant-wide system, data is typically shared between servers over a
high-bandwidth network, such as a 10Mb or higher Ethernet. In this case each
server is assumed to be responsible for controlling a different part of the plant.
Typically there are multiple control rooms, or multiple stations in the same
control room, each associated with a specific server.
Figure 15.1 Geographically Distributed System
Site B
Site A
Site C
WAN
Master Control Center
plscpcg.book Page 336 Monday, May 28, 2001 10:11 AM