In one of my SharePoint environment, we had issue with my
sites. When users click on about us, it automatically creates my site for all
the user. All these my sites are created as a site collections in the web
application.
We have 2000 people accessing the site and every user creating
new my site. So it will be 2000 site collection in one web application.
SharePoint can handle that, but we not using any my site features in our
environment.
For this we just need to prevent the users to create my
sites. We can do that from central admin site User profile service settings as
shown below.
Open SharePoint central admin site User profile Service
application. Select manage user Permissions.
We can see a popup as shown below. Select Authenticated
users and uncheck “Create personal sites” option as shown the image below.
Click on Ok to save the settings.
Hope this will helps.
