# Hypothetical specs for large OPC Ua server

**URL:** <https://forum.inductiveautomation.com/t/hypothetical-specs-for-large-opc-ua-server/115191>\
**Category:** Ignition\
**Tags:** opcua, ignition83\
**Created:** [April 21, 2026, 10:51pm UTC](https://forum.inductiveautomation.com/t/hypothetical-specs-for-large-opc-ua-server/115191 "2026-04-21T22:51:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Ethan\_Brown](https://avatars.discourse-cdn.com/v4/letter/e/9de053/32.png) [@Ethan\_Brown](https://forum.inductiveautomation.com/u/Ethan_Brown)\
**Post date:** [April 21, 2026, 10:51pm UTC](https://forum.inductiveautomation.com/t/hypothetical-specs-for-large-opc-ua-server/115191/1 "2026-04-21T22:51:21Z")

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If I wanted to run a centralized server that has a handful of remote tag providers and I wanted to subscribe to several hundreds of thousands of tags from each of the tag providers, what kind of server specs do you think I’d realistically need? Let’s assume there’s a total of 2 million tags subscribed. 20k tags per subscription at a 1-5 second publish rate.