Rockwell Automation 1757-SWKIT3200 ProcessLogix R320.0 Installation and Upgrade Guide - Manual (Page 243)

Publication 1757-IN032B-EN-P - April 2001
Performance and Capacity Specifications 7-3
Large System (Windows NT Server as the operating system)
A large configuration may consist of a Redundant Server pair and up to
20 stations. These systems typically include active monitoring from
multiple Stations with or without multiple locations and random report
generation.
Database Size in relation to System Configurations
The number of physical Servers and Stations does not alone determine
system configuration. If a large and complex process is being considered,
this will effect the size of the database. For example, a configuration may
require passive monitoring and occasional report generation, but the
process is large and complex. Therefore, it would be better to install a
system which better matches the medium system rather than the small
system. Use the table below to approximate your database size in relation
to your system size. (It may require you to upgrade to a larger system.
* Hybrid Controllers configured in a redundant mode should be counted
as 1 Hybrid Controller.
Table 7.B Database Sizing Chart
Configuration Examples Database Size System Suggestion
1 Hybrid Controller *
Process systems with up to 100
CM/SCM/IOM 0-200 MB Small
2-3 Hybrid Controllers *
Process systems with up to 500
CM/SCM/IOM 200-350 MB Medium
3-6 Hybrid Controllers *
Process systems with 500-600
CM/SCM/IOM 350-500 MB Large Workstation
5 or more Hybrid Controllers *
Process systems with more than 600
CM/SCM/IOM Greater than 500 MB Large Server