ASP.NET - 流式文件到客户端是否占用服务器内存？

I have a requirement to make the files in a file server available for download through an application running on a web server. Users would be clicking on the links available on the application page and a save as dialog would appear. This kind of a use case is pretty common and I might be talking about a basic thing, but I would appreciate if someone can confirm if my following assumptions are correct. I have a requirement to make the files in a fil