We are planning to upgrade to OpManager 12. 

Currently there is running version 11.6 on a Windows 2008 R2 machine with a MySQL database. Now we are thinking about which database we want to migrate to.

Does anyone have experience with performance, maintainability and maintenance of MSSQL or PGSQL.

Is it better to upgrade the OS to a newer Windows version, E.g. Windows Server 2012 R2?

Thanks for your answers.

Best Regards,

Erik