SharePoint database machine running out of disk space.

This is a common problem. The first thing you might want to inspect is the database size.

Navigate to C:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\DATA

Check the size of SharePoint_Config database. If this database is taking more disk space you are at the right page.

Run the following commands and you should be good.

alter database sharepoint_config set recovery simple
dbcc shrinkfile(sharepoint_config_log,50)
alter database sharepoint_config set recovery full