Hello. I am facing a project where i am going to have a lot of OPC Tags configured, technically speaking around 250000 tags. Is Ignition having any tags quantity limits? Do Ignition propose any special setup for high tag density?

There is no arbitrary tag limit. 250,000 is within the realm of what you can do on a single gateway if you use good hardware. The limiting factors may be where the tags are coming from and the rates you need to poll at. What kinds of devices, how many tags per device, and what update rate do you ne…

Ignition’s gateway is very good at parallelization. Extra cores do wonders.

I am using 1 second update rate, I will be aggregating data from 3 different OPC-UA servers into Ignition as some kind of data aggregation point. To be honest when i have too many tags it starts having problems when browsing tags or adding/removing tags. My actual count is around 70.000 tags using…

[image] CuninganReset: I am using 1 second update rate, I will be aggregating data from 3 different OPC-UA servers into Ignition as some kind of data aggregation point. This will be relatively easy for Ignition to handle, as the performance burden will largely be on those 3 servers, not the I…

Hi :slight_smile: Can I ask what is the biggest number of tags that someone used in their project? Or at least what is the biggest project you know of? I’m asking because for our potential use case, there may eventually be over 1 000 000 tags on a single Gateway (some of them OPC, some MQTT), ide…

Most 1M+ tag systems are done by using multiple Ignition gateways and remote tag providers, but it might be possible to do it all on one depending on where your OPC tags are coming from (external vs internal) and how many are OPC vs MQTT. You would want something like 6C+ or 8C+ Xeon, 64gb ram with…

Thanks a lot for your fast response & recommendations!!! :sunglasses: The vast majority of the tags would be external, coming from over a 100 different PLCs. The plan is to transition everything to MQTT (which should help with the load), but that will be a gradual process over the next few years. …

[image] jan.kriz: The vast majority of the tags would be external, coming from over a 100 different PLCs. What I mean by external is that they are from another OPC server such as Kepware or a PLC that has its own built-in OPC server, rather than being polled by Ignition’s drivers and made ava…

[image] Kevin.Herron: What I mean by external is that they are from another OPC server such as Kepware or a PLC that has its own built-in OPC server, rather than being polled by Ignition’s drivers and made available in Ignition’s built-in OPC server. Sorry, I misunderstood - yes, they would b…

I do think it will be possible to use only 1 powerful Ignition server in this case, then.

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