ClearSCADA 2009 R2/R2.1/R2.2/R2.3 Standalone Server
Shut the server down.
Upgrade the server to ClearSCADA 2009 R2.4.
Restart the server.
ClearSCADA 2009 R2/R2.1/R2.2/R2.3 Main and Standby Servers
Shut the standby server down.
Upgrade the standby server to ClearSCADA 2009 R2.4.
Restart the standby server.
Wait for the server to fully synchronize with the main server and go into the standby state.
Shut the main server down. The upgraded standby server will take over as the main server.
Upgrade the previously main server to ClearSCADA 2009 R2.4.
Restart the previously main server. The server will synchronize with the new main server and go into the standby state.
To take advantage of the numerous improvements in this version, it is strongly recommended that both the servers and clients be upgraded to ClearSCADA 2009 R2.4. See the Release Notes for more information.
To upgrade from versions older than ClearSCADA 2009 R2, please follow the instructions shown in the Upgrade Strategy for ClearSCADA 2009 R2 (using 2009 R2.4 instead of 2009 R2).