We are running a Heroku app built on Rails 6.2 with Postgres and Reddis. For some of the processes we need to run, we must keep a proper persistent file system. AWS S3 will not work for our needs. Please note that this is not about replacing the Postgress or Reddis functionalities. Is there a recommended way of integrating a Heroku rails app with a persistent file system? I can see a couple of options but maybe there are better ones: