# Deleting Pre-Processed partitions. Safe to do so?

**URL:** <https://forum.inductiveautomation.com/t/deleting-pre-processed-partitions-safe-to-do-so/112467>\
**Category:** Ignition\
**Tags:** ignition81, database\
**Created:** [November 27, 2025, 2:41am UTC](https://forum.inductiveautomation.com/t/deleting-pre-processed-partitions-safe-to-do-so/112467 "2025-11-27T02:41:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![SWoollett](https://avatars.discourse-cdn.com/v4/letter/s/a9a28c/32.png) [@SWoollett](https://forum.inductiveautomation.com/u/SWoollett)\
**Post date:** [November 27, 2025, 2:41am UTC](https://forum.inductiveautomation.com/t/deleting-pre-processed-partitions-safe-to-do-so/112467/1 "2025-11-27T02:41:21Z")

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Hi all,

We had pre-processing enabled on our tag history. We’ve subsequently decided that this is not required. I would like to delete the old pre-processed partitions to free up diskspace.

Is it safe to straight-up delete these partitions from SSMS or will this cause issues with Ignition looking for these tables.

Presumably, as long as I delete the entry from the sqlth\_partitions table it should be fine

Cheers