# Storing (historizing) data from OPC-DA connection

**URL:** <https://forum.inductiveautomation.com/t/storing-historizing-data-from-opc-da-connection/32101>\
**Category:** Ignition\
**Created:** [February 10, 2020, 6:36pm UTC](https://forum.inductiveautomation.com/t/storing-historizing-data-from-opc-da-connection/32101 "2020-02-10T18:36:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ccorrea](https://avatars.discourse-cdn.com/v4/letter/c/919ad9/32.png) [@ccorrea](https://forum.inductiveautomation.com/u/ccorrea)\
**Post date:** [February 10, 2020, 6:36pm UTC](https://forum.inductiveautomation.com/t/storing-historizing-data-from-opc-da-connection/32101/1 "2020-02-10T18:36:13Z")

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Hi guys,

Newbie question here (I was once told there’s no such thing as dummy question, so…).

I have some devices connected to DeltaV and seeing the data in real-time; because of history-tag limitations such data is not being stored. If I had a OPC-DA connection to DeltaV (let’s say, from Ignition), is there any limitation to store that information in the SQL tag historian?

I understand I’d need OPC-HDA to query the DeltaV historian, but I’m not so sure about simply storing real-time DA data (with all the possible limitations that might have).

Thanks and regards.

PD: DeltaV version we have doesn’t allow for OPC-UA

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [February 10, 2020, 6:43pm UTC](https://forum.inductiveautomation.com/t/storing-historizing-data-from-opc-da-connection/32101/2 "2020-02-10T18:43:16Z")

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No limitations, just enable history on those tags once you’ve got them all set up in Ignition.

(and once you’ve got a connection to a database set up to store the historical data into)