Sql server max storage size.

Maximum database size of 10 GB per database in SQL Server 2016, SQL Server 2014, SQL Server 2012, and 2008 R2 Express (4 GB for SQL Server 2008 Express and earlier; compared to 2 GB in the former). The limit applies per database (log files excluded); but in some scenarios users can access more data through the use of multiple interconnected databases.

 

To Shrink/Reduce DB Size - https://www.eukhost.com/kb/how-to-reduceshrink-the-sql-server-database-size/

 

To Increase DB Size - https://www.dotnetheaven.com/article/increase-database-size-using-sql-server-mangement-studio