Rockwell Automation 1757-SWKIT5100 ProcessLogix R510.0 Installation and Upgrade Guide - Manual (Page 249)

Publication 1757-IN510A-EN-P - October 2003
Performance and Capacity Specifications 11-9
Server Redundancy
Database synchronization is performed as a background activity and is
performed online without affecting the operation of the Servers. Time
to complete synchronization will depend on the system configuration
(e.g., database size, history, processor speed).
Client/Server Communication Capacity
Table 11.F Server redundancy specifications
Server Redundancy
Server Switchover Time – Default 30-40 sec
Server Switchover Time – Fastest Configurable Time 10 sec
On Server switchover, the 1757-PLX52 performs an event recovery. This causes the
controller to report all current alarm conditions. The Server will report all current process
alarms and events.
Table 11.G Server communication NetBIOS session capacity
Session type or activity Comment/example
Time Sync Active once every configured Time Sync period.
Shared Drives/ Displays Active continuously, if Station Client get displays from
central Server.
Shared printer Active continuously if linked to a network printer for
Reports, etc.
Server Redundancy Uses from 1-3 Server Sessions based upon User/Login
Configuration settings. (Also requires Time-Sync)
ER Server Active during replication on Redundant Servers.
Multi-User CB Active during Point Build (uses shared drive)
Snap-Shot Save & Restore Active during this operation (uses shared drive)
Server Type Simultaneous NetBIOS sessions available
ProcessLogix Server on Windows
2000 Server Unlimited (See Microsoft license restrictions)