Database has large amounts of unused space (SharePoint Server)

APPLIES TO: yes2013 yes2016 yes2019 noSharePoint Online

Rule Name: Database has large amounts of unused space.

Summary: The database has large amounts of unused space allocated on the disk. This database uses a large amount of space on the file system unless it is shrunk down to a small size. This event occurs if the unused space is more than 20% of the disk space and the unused space is greater than the auto-growth size plus 50 megabytes (MB).

Cause: Many activities can create unused space in the database. These activities include running the Windows PowerShell Move-SPSite command, and deleting documents, document libraries, lists, list items, and sites.

Resolution: Ignore this event, or shrink the database if you have to.

See also

Other Resources

Shrinking a Database