Actual Data Store Size should be reflected immediately when the recycle bin is cleared.

[StaceMaples]

Currently, when items are deleted from the AGO Data Store, the Data Store Size is not updated. I've done two rounds of cleaning over the past month, deleting hundreds of GB of data, and the reported data store size has not changed, ever. 

If we are going to have to manage our Data Store size, we need effective tools to do so. 

[Shai_V1]

Hello @StaceMaples,

The expected behavior is that the storage quota would be updated as soon as items are deleted from the recycle bin. In order to help us troubleshoot this issue, please open a support ticket and the ArcGIS Online team will investigate.

[PeterKnoop]

@StaceMaples wondering if you were deleting whole items (i.e., hosted feature layers), or if you were deleting features from a hosted feature layer on ArcGIS Online, but not the layer itself?

If the latter, then according to BUG-000135310 (closed with "as designed") deleting features will not free up the ArcGIS Online storage used by those features, "Due to the nature of storage management by the data store engine, space is not necessary reclaimed after a feature is deleted." 

In order to reclaim the storage used by deleted features, you need to compress the hosted feature layer's feature service after deleting features:

1. Open the Item Details view of your hosted feature layer in ArcGIS Online.
2. Scroll down and look for URL on the far right, and click to open the layer's ArcGIS REST Services Directory view.
3. Click on "Admin" near the top-right.
4. Scroll down to the "Supported Operations" at the bottom of the page, and click on "Compress".
5. On the page that opens, click the "Compress Data" button.
6. It may take some time to complete the operation, particular if you deleted a lot of features, so you may need to continue to check the status of the job.

AND, if you have deleted all of the features in a table or layer -- perhaps by using Truncate  -- then there is the additional step of having to create a new feature (and deleting it, if you don't need it), which will finally trigger freeing up the space.

The reported feature storage usage should update within a few minutes to show the reclaimed space.