Thank you but this option is not allowed for admin panel?

I want see overuse from all users account not by domain admin.

Is it possible?

Ram

The sys admin is for managing the server as a whole. Domain admins are responsible for users...so the system admin side has few ways you can get user data (e.g., set up a system even to notify you if users are nearing disk space limits based on a % of usage or exporting all users and checking their usage via spreadsheet). However, that's not really your job as a system admin. Really, as the system admin you can keep track of usage -- the use of an Event is probably the best way -- but your main concern is overall disk usage. You do this via the dashboard and Server Health reports, as an example. YOU should keep track of the overall space available on the server -- the domain admin should keep track of their users and individual disk space usage.