# Config.idb backup size

**URL:** <https://forum.inductiveautomation.com/t/config-idb-backup-size/69762>\
**Category:** Ignition\
**Created:** [February 13, 2023, 8:45am UTC](https://forum.inductiveautomation.com/t/config-idb-backup-size/69762 "2023-02-13T08:45:46Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Deville\_Xavier](https://avatars.discourse-cdn.com/v4/letter/d/df705f/32.png) [@Deville\_Xavier](https://forum.inductiveautomation.com/u/Deville_Xavier)\
**Post date:** [February 13, 2023, 1:49pm UTC](https://forum.inductiveautomation.com/t/config-idb-backup-size/69762/3 "2023-02-13T13:49:31Z")

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I did not convert from 7.9, I read this thread : [Purging the config.idb after splitting frontend/backend](https://forum.inductiveautomation.com/t/purging-the-config-idb-after-splitting-frontend-backend/52702) and both PROJECT\_CHANGES and PROJECT\_RESOURCES tables are empty.

> [@pturmel](#):
>
> Are you storing large documents or datasets in memory tags?

I don't, I removed all the tag providers and the size of the backup did not change.

I found that the culprit was the TAGCONFIG table. After pruning this table, the size of the config.idb went down from 1.8Go to 4Mo. Do you know the potential side effect of deleting this table ?

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