Hello everyone! 
I have a team-managed Jira Software Standard subscription.
I have then 250 GB of free space and I would like to monitor it. If if go to Atlassian Admin section, then my product, what I see is:

... But I think it's impossible, at least one GB or more are used in my projects with the attachments we attached in our issues ...
How can I make sure that this is correct? Do I have to activate some specific setting?
Thank you in advance!