Once in a while you may get an E-mail notification from SharePoint that a user has nearly reached the storage limits.
Which is set at 1 Terrbyte ?
In our case there was something weird going on… We had a user that reported a Mail Archive file (PST) of 278 Gb large ?
While the maximum size of a PST is 50 GB…
After deleting it and removing it from the Recycle Bin, the problem was solved
How to check the storage size on OneDrive4Business
Go to the storman.aspx page :