I don't think there's any way to really know. The metadata needs to be read from storage and we do not know how much data will be read until we're done reading. But I'll check with the team just in case. Thanks.

Thanks. I'm doing some tests on my lab env where I deleted from aws about 12GB of an old backup station but storage account still count the whole amount before deletion.
I started the repo sync last wednesday 06/09 but when I open backup plan on rmm menu I still get repository sync in progress message. My only concern is that even local backups got stuck. Total storage on AWS before deletion was about 40GB. This is just a lab env though. Thank you for your quickly response.