A Web Application is required for My Sites. This Web application will be used to host personal sites and profile pages. By ...

A Web Application is required for My Sites. This Web application will be used to host personal sites and profile pages. By default, the restored SSP will continue to use the existing location, which may be located on the original farm.

You can also select an existing Web application on this farm where you have already restored personal sites. Alternatively, you can create a new Web application for hosting personal sites. Until you restore personal sites to the selected Web application, new personal sites will be created when users try to access them.