Rockwell Automation 1757-SWKIT3200 ProcessLogix R320.0 Installation and Upgrade Guide - Manual (Page 260)

Publication 1757-IN032B-EN-P - April 2001
7-20 Performance and Capacity Specifications
Engineering Tools Resources
Table 7.Y Engineering Repository Configuration
Engineering Repository (ER) Database Configuration
Recommended Maximum Size of ER
Database (Compacted) 1 Gbyte
TIP
Large database operations (load controller, delete
controller, upload controller, update controller, etc.)
on a 1757-PLX52 loaded with more than 500 total
CMs, SCMs and IOMs will fragment the ER database.
This can cause a growth in the ER database of 2-3
times over the initial size of the database. After large
database operations, the database must be
compacted to avoid potential performance and
database corruption problems. Use the DBAdmin
Tool to compact the database.
TIP
Import operations may cause a growth in the ER
database size. After import operations, close the
Control Builder and use the DBAdmin Tool to
compact the database.