Before installing the SQL Server, check the system requirements for the specific SQL Server edition at https://msdn.microsoft.com/en-us/library/ms143506(v=sql.130).aspx.
Ensure the existing SQL Server supports updates. For a list of supported upgrade scenarios, see https://msdn.microsoft.com/en-us/library/ms143393(v=sql.130).aspx.
Note: Back up all your databases.
The next step is to install SQL Server Management Studio. SQL Server Management Studio is an application for managing the SQL Server. With SQL Server Management Studio, you can create and restore backups, change database settings, and give users SQL Server rights.
The following screen will be displayed:
Click Install to start the installation.
During the installation, you can follow the progress of the installation. The following screens will be displayed. The installation can take some time.
When the installation is completed, the following screen will be displayed. You have to restart the system to complete the setup.
Note: You have to change the Compatibility level for every company database.
For optimal performance, it is important to update the indexes and statistics. To create these optimization jobs, you can use the ESI tool. For more information, see Exact System Information (ESI) help file.