I was last week on a Veeam on tour.
There they told me that if you want to install Veeam one with sql express.
Its recommanded to use sql express 2014 and to install it separately manually before the veeam one setup.
I downloaded sql express 2014 from the microsoft site. During the setup it's asking with feature it needs to install. parameters how to authenticate,.....
Does there exist a guideline/setup/manual how to progress with this install.