Storing large image files in database vs system files

I need to store many large photos that will be uploaded daily in my application and retrieve those with id. There is no need to any special queries. What is the best approach for storing this files consider to time that number of the images pass a million and side of images exceed the server disk size. What is the most manageable solution? 1. Using SQL FileStream or FileTable and storing files in separate database. 2. Using file system and saving images as files. 3. Using a FTP server.