Phase 2: Updating Os Clients Interconnected With Server_2 - Siemens SIMATIC PCS 7 Function Manual

● If you are using more than one redundant OS server pair, you must first update standby
● Carry out the Phase 1 steps, 1 through 9 for each Server_2.
Result after Phase 1
● Server_2 is updated and not connected to any OS clients.
● Server_1 is the master server in the PCS 7 project being updated.
● Server_2 can be either master or standby, depending on the configuration.
● The archives will be synchronized between Server_1 and Server_2.
● Client_1 is connected to Server_1.
● Client_2 is either deactivated or interconnected with Server_1 after you have changed the
6.10.4

Phase 2: Updating OS clients interconnected with Server_2

Introduction
In Phase 2, you update the OS clients that were interconnected with Server_2.
The system can be controlled at all times using Client_1, which is interconnected with the not-
yet-updated Server_1.
The same PCS 7 version is running on the active OS server Server_1 and on Client_1. Mixed
operation between OS clients and OS servers of different PCS 7 versions is not possible.
Archive data and messages that have accrued on OS server Server_1 during the update
process are available on both OS servers. Synchronization of the archives is complete with
the following message: "REDRT: <Name of the OS server> complete."
Perform the steps without extended interruptions because the redundancy is not available
during the update.
Initial situation before phase 2
● Server_1 is master server in the PCS 7 project.
● The updated Server_2 is standby server in the updated PCS 7 project.
● Client_1 is connected to Server_1.
● Client_2 is either deactivated or interconnected with Server_1 after you have changed the
Fault-tolerant Process Control Systems (V8.0)
Function Manual, 03/2012, A5E02779471-02
server Server_2 for each.
preferred server setting. Client_2 cannot access the upgraded Server_2 as the preferred
server.
CAUTION
preferred server setting. Client_2 cannot access the upgraded Server_2 as the preferred
server.
Failure, Switchover and Return of Fault-tolerant Components
6.10 Guidelines for updating a redundant OS in runtime
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