# Couple Questions on the Ignition Tag History

**URL:** <https://forum.inductiveautomation.com/t/couple-questions-on-the-ignition-tag-history/89013>\
**Category:** Ignition\
**Created:** [April 18, 2024, 1:34am UTC](https://forum.inductiveautomation.com/t/couple-questions-on-the-ignition-tag-history/89013 "2024-04-18T01:34:21Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Eric\_Ervin](https://avatars.discourse-cdn.com/v4/letter/e/ecd19e/32.png) [@Eric\_Ervin](https://forum.inductiveautomation.com/u/Eric_Ervin)\
**Post date:** [April 18, 2024, 1:34am UTC](https://forum.inductiveautomation.com/t/couple-questions-on-the-ignition-tag-history/89013/1 "2024-04-18T01:34:21Z")

</div>

Sorry couldn't find a clear answer to these questions I had on the Tag History Option. I'd like to get some more information on it as well as what people use it for or do they use a purpose built table and data structure for tag history?

How long does it store the history of the tag? Can this be changed, say store a tag for a week or a month?

Can you change how it generates the tables? Maybe the naming schema?

Thanks

---

<div class="post-metadata">

**Author:** ![amy.sudibyo](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/amy.sudibyo/32/38659_2.png) [@amy.sudibyo](https://forum.inductiveautomation.com/u/amy.sudibyo)\
**Post date:** [April 18, 2024, 1:45am UTC](https://forum.inductiveautomation.com/t/couple-questions-on-the-ignition-tag-history/89013/2 "2024-04-18T01:45:01Z")

</div>

You might find some useful information in [Inductive University](https://www.inductiveuniversity.com/courses/ignition/tag-historian-in-ignition/8.1)

---

<div class="post-metadata">

**Author:** ![Eric\_Ervin](https://avatars.discourse-cdn.com/v4/letter/e/ecd19e/32.png) [@Eric\_Ervin](https://forum.inductiveautomation.com/u/Eric_Ervin)\
**Post date:** [April 18, 2024, 1:58am UTC](https://forum.inductiveautomation.com/t/couple-questions-on-the-ignition-tag-history/89013/3 "2024-04-18T01:58:04Z")

</div>

Thanks,

I'm also interested in how people are utilizing it in deployments

---

<div class="post-metadata">

**Author:** ![jlandwerlen](https://avatars.discourse-cdn.com/v4/letter/j/bc8723/32.png) [@jlandwerlen](https://forum.inductiveautomation.com/u/jlandwerlen)\
**Post date:** [April 18, 2024, 2:59am UTC](https://forum.inductiveautomation.com/t/couple-questions-on-the-ignition-tag-history/89013/4 "2024-04-18T02:59:37Z")

</div>

> [@Eric\_Ervin](#):
>
> How long does it store the history of the tag?

As long as you tell it to. See pruning, [Tag History Providers | Ignition User Manual](https://www.docs.inductiveautomation.com/docs/8.1/ignition-modules/tag-historian/tag-history-providers#data-pruning)

> [@Eric\_Ervin](#):
>
> Can this be changed, say store a tag for a week or a month?

Yes, but it's not based per tag, but per history provider.

> [@Eric\_Ervin](#):
>
> Can you change how it generates the tables? Maybe the naming schema?

See this doc for tables, [Ignition Auto-Generated Tables | Ignition User Manual](https://www.docs.inductiveautomation.com/docs/8.1/platform/sql-in-ignition/ignition-auto-generated-tables#tag-history)

This doc may be helpful as well.

> **[Ignition Server Sizing and Architecture Guide](https://inductiveautomation.com/resources/article/ignition-server-sizing-and-architecture-guide)**
>
> This guide is intended to provide some tips to help you determine the correct architecture depending on your requirements. It is important to note that any architecture that you come up with needs to be fully tested and verified. Throughout that...