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Question about Redundancy with New Hardware IO Servers

Alan

my system has 2 only IO Servers in redundancy. I am upgrading the 2 existing WIN 7 O/S servers with 2 New WIN10 O/S Hardware Servers. the Citect version is Citect SCADA 2018 (V8.1) on ALL

the same project and SCADA Version will exist on all servers. my question is about my methodology in upgrading the hardware.  Servers

can I have one "existing server (Primary)" and one "new Server (Backup)" together online (with the other 2 servers Citect SCADA applications shutdown from runtime)

and these mixes of server have full redundancy? my plan is as follows.

- "existing" servers running (new servers not in runtime)

- shutdown "existing" backup server SCADA Runtime

- start "New" Backup Server SCADA Runtime

will the above have redundancy regardless of the differing O/S between them ?

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  • +1

    Hi Alan,


    What you want to do is called "Online upgrade" and Citect/Plant SCADA supports that. However, you need to do it a specific order which is primary first. Redundancy will be preserved and communication will work regardless of hardware.

    Link to 2018 online upgrade help:

    Online Upgrade | Upgrading (aveva.com) (gcsresource.aveva.com/.../Online_Upgrade.htm)

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  • +1

    Hi Alan,


    What you want to do is called "Online upgrade" and Citect/Plant SCADA supports that. However, you need to do it a specific order which is primary first. Redundancy will be preserved and communication will work regardless of hardware.

    Link to 2018 online upgrade help:

    Online Upgrade | Upgrading (aveva.com) (gcsresource.aveva.com/.../Online_Upgrade.htm)

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