In this case I recommend you to raise a ticket in our Support Channel: http://support.atlassian.com
This is the guide related to your request: https://confluence.atlassian.com/display/CLOUDKB/How+Much+Disk+Space+is+Being+Used+By+JIRA+and+Confluence+Cloud
However, only the support team have access to the server to help you with this info.
I hope it helps
In the past, Portfolio for Jira required a high degree of detail–foresight that was unrealistic for many businesses to have–in order to produce a reliable long-term roadmap. We're tur...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs