Multiple OPC connections on the same server

Hi !

I have a question about performance.
I'm using 4 OPC server (Schneider Server Expert) with 10 PLC spread on the OPC servers

It is better to create one connection in the gateway for each PLC (multiple connection per OPC server) ? Or one for each OPC server ?

I want to only write the PLC name is the OPC tag parameters, and use this name as OPC connection.

Just one OPC connection per OPC server.

Why is it better ?

Because it’s the default and there’s zero reason to do otherwise. Making multiple OPC connections to the same server makes no sense unless you have some specific reason.

Ok.

I have thousands tags, and some PLC are not downloaded for the moment.

My idea is to only write the PLC name and reuse it as OPC connection, so I can redirect all concerned tags to the good OPC server in few clicks, instead of changing each tag which takes me a long time.

My application is already slow, I just don't want to slow it down even more by using 10 connection instead of 4.